Fix typos

44 files changed, 55 insertions, 55 deletions

diff --git a/src/core_write.cpp b/src/core_write.cpp
index 91742b7d1b..54b18a4931 100644
--- a/src/core_write.cpp
+++ b/src/core_write.cpp
@@ -209,6 +209,6 @@ void TxToUniv(const CTransaction& tx, const uint256& hashBlock, UniValue& entry,
         entry.pushKV("blockhash", hashBlock.GetHex());
 
     if (include_hex) {
-        entry.pushKV("hex", EncodeHexTx(tx, serialize_flags)); // the hex-encoded transaction. used the name "hex" to be consistent with the verbose output of "getrawtransaction".
+        entry.pushKV("hex", EncodeHexTx(tx, serialize_flags)); // The hex-encoded transaction. Used the name "hex" to be consistent with the verbose output of "getrawtransaction".
     }
 }
diff --git a/src/cuckoocache.h b/src/cuckoocache.h
index 947e1a7185..d1de712024 100644
--- a/src/cuckoocache.h
+++ b/src/cuckoocache.h
@@ -224,7 +224,7 @@ private:
      *
      * Instead we treat the 32-bit random number as a Q32 fixed-point number in the range
      *  [0,1) and simply multiply it by the size.  Then we just shift the result down by
-     *  32-bits to get our bucket number.  The results has non-uniformity the same as a
+     *  32-bits to get our bucket number.  The result has non-uniformity the same as a
      *  mod, but it is much faster to compute. More about this technique can be found at
      *  http://lemire.me/blog/2016/06/27/a-fast-alternative-to-the-modulo-reduction/
      *
diff --git a/src/net.cpp b/src/net.cpp
index 53a0a9b180..975a1d10a0 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -1954,7 +1954,7 @@ void CConnman::ThreadOpenAddedConnections()
         for (const AddedNodeInfo& info : vInfo) {
             if (!info.fConnected) {
                 if (!grant.TryAcquire()) {
-                    // If we've used up our semaphore and need a new one, lets not wait here since while we are waiting
+                    // If we've used up our semaphore and need a new one, let's not wait here since while we are waiting
                     // the addednodeinfo state might change.
                     break;
                 }
diff --git a/src/net_processing.cpp b/src/net_processing.cpp
index f5073fe903..61e6ae7448 100644
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -339,7 +339,7 @@ bool MarkBlockAsInFlight(NodeId nodeid, const uint256& hash, const CBlockIndex*
     CNodeState *state = State(nodeid);
     assert(state != nullptr);
 
-    // Short-circuit most stuff in case its from the same node
+    // Short-circuit most stuff in case it is from the same node
     std::map<uint256, std::pair<NodeId, std::list<QueuedBlock>::iterator> >::iterator itInFlight = mapBlocksInFlight.find(hash);
     if (itInFlight != mapBlocksInFlight.end() && itInFlight->second.first == nodeid) {
         if (pit) {
@@ -518,7 +518,7 @@ void FindNextBlocksToDownload(NodeId nodeid, unsigned int count, std::vector<con
         }
 
         // Iterate over those blocks in vToFetch (in forward direction), adding the ones that
-        // are not yet downloaded and not in flight to vBlocks. In the mean time, update
+        // are not yet downloaded and not in flight to vBlocks. In the meantime, update
         // pindexLastCommonBlock as long as all ancestors are already downloaded, or if it's
         // already part of our chain (and therefore don't need it even if pruned).
         for (const CBlockIndex* pindex : vToFetch) {
diff --git a/src/qt/coincontroldialog.cpp b/src/qt/coincontroldialog.cpp
index b83755ab30..a45e9f85c1 100644
--- a/src/qt/coincontroldialog.cpp
+++ b/src/qt/coincontroldialog.cpp
@@ -206,7 +206,7 @@ void CoinControlDialog::showMenu(const QPoint &point)
         contextMenuItem = item;
 
         // disable some items (like Copy Transaction ID, lock, unlock) for tree roots in context menu
-        if (item->text(COLUMN_TXHASH).length() == 64) // transaction hash is 64 characters (this means its a child node, so its not a parent node in tree mode)
+        if (item->text(COLUMN_TXHASH).length() == 64) // transaction hash is 64 characters (this means it is a child node, so it is not a parent node in tree mode)
         {
             copyTransactionHashAction->setEnabled(true);
             if (model->isLockedCoin(uint256S(item->text(COLUMN_TXHASH).toStdString()), item->text(COLUMN_VOUT_INDEX).toUInt()))
@@ -374,7 +374,7 @@ void CoinControlDialog::radioListMode(bool checked)
 // checkbox clicked by user
 void CoinControlDialog::viewItemChanged(QTreeWidgetItem* item, int column)
 {
-    if (column == COLUMN_CHECKBOX && item->text(COLUMN_TXHASH).length() == 64) // transaction hash is 64 characters (this means its a child node, so its not a parent node in tree mode)
+    if (column == COLUMN_CHECKBOX && item->text(COLUMN_TXHASH).length() == 64) // transaction hash is 64 characters (this means it is a child node, so it is not a parent node in tree mode)
     {
         COutPoint outpt(uint256S(item->text(COLUMN_TXHASH).toStdString()), item->text(COLUMN_VOUT_INDEX).toUInt());
 
diff --git a/src/qt/guiutil.h b/src/qt/guiutil.h
index 71a69483f5..4b856986da 100644
--- a/src/qt/guiutil.h
+++ b/src/qt/guiutil.h
@@ -141,7 +141,7 @@ namespace GUIUtil
      * Makes a QTableView last column feel as if it was being resized from its left border.
      * Also makes sure the column widths are never larger than the table's viewport.
      * In Qt, all columns are resizable from the right, but it's not intuitive resizing the last column from the right.
-     * Usually our second to last columns behave as if stretched, and when on strech mode, columns aren't resizable
+     * Usually our second to last columns behave as if stretched, and when on stretch mode, columns aren't resizable
      * interactively or programmatically.
      *
      * This helper object takes care of this issue.
diff --git a/src/qt/modaloverlay.cpp b/src/qt/modaloverlay.cpp
index b573dbe226..249418213f 100644
--- a/src/qt/modaloverlay.cpp
+++ b/src/qt/modaloverlay.cpp
@@ -81,7 +81,7 @@ void ModalOverlay::tipUpdate(int count, const QDateTime& blockDate, double nVeri
     // keep a vector of samples of verification progress at height
     blockProcessTime.push_front(qMakePair(currentDate.toMSecsSinceEpoch(), nVerificationProgress));
 
-    // show progress speed if we have more then one sample
+    // show progress speed if we have more than one sample
     if (blockProcessTime.size() >= 2) {
         double progressDelta = 0;
         double progressPerHour = 0;
diff --git a/src/qt/splashscreen.cpp b/src/qt/splashscreen.cpp
index 5df1282f73..66e9dd0465 100644
--- a/src/qt/splashscreen.cpp
+++ b/src/qt/splashscreen.cpp
@@ -91,7 +91,7 @@ SplashScreen::SplashScreen(Qt::WindowFlags f, const NetworkStyle *networkStyle)
 
     pixPaint.setFont(QFont(font, 15*fontFactor));
 
-    // if the version string is to long, reduce size
+    // if the version string is too long, reduce size
     fm = pixPaint.fontMetrics();
     int versionTextWidth  = fm.width(versionText);
     if(versionTextWidth > titleTextWidth+paddingRight-10) {
diff --git a/src/qt/walletmodel.cpp b/src/qt/walletmodel.cpp
index 39ef20c835..b17bc3c91a 100644
--- a/src/qt/walletmodel.cpp
+++ b/src/qt/walletmodel.cpp
@@ -698,7 +698,7 @@ bool WalletModel::bumpFee(uint256 hash)
     confirmationDialog.exec();
     QMessageBox::StandardButton retval = static_cast<QMessageBox::StandardButton>(confirmationDialog.result());
 
-    // cancel sign&broadcast if users doesn't want to bump the fee
+    // cancel sign&broadcast if user doesn't want to bump the fee
     if (retval != QMessageBox::Yes) {
         return false;
     }
diff --git a/src/random.h b/src/random.h
index ea88670a37..5fe8f2fd04 100644
--- a/src/random.h
+++ b/src/random.h
@@ -32,7 +32,7 @@ void RandAddSeedSleep();
 
 /**
  * Function to gather random data from multiple sources, failing whenever any
- * of those source fail to provide a result.
+ * of those sources fail to provide a result.
  */
 void GetStrongRandBytes(unsigned char* buf, int num);
 
diff --git a/src/script/interpreter.cpp b/src/script/interpreter.cpp
index 927b0267ca..ffaba393c0 100644
--- a/src/script/interpreter.cpp
+++ b/src/script/interpreter.cpp
@@ -110,7 +110,7 @@ bool static IsValidSignatureEncoding(const std::vector<unsigned char> &sig) {
     //   excluding the sighash byte.
     // * R-length: 1-byte length descriptor of the R value that follows.
     // * R: arbitrary-length big-endian encoded R value. It must use the shortest
-    //   possible encoding for a positive integers (which means no null bytes at
+    //   possible encoding for a positive integer (which means no null bytes at
     //   the start, except a single one when the next byte has its highest bit set).
     // * S-length: 1-byte length descriptor of the S value that follows.
     // * S: arbitrary-length big-endian encoded S value. The same rules apply.
diff --git a/src/support/lockedpool.cpp b/src/support/lockedpool.cpp
index d92ab02d6b..1401188a2b 100644
--- a/src/support/lockedpool.cpp
+++ b/src/support/lockedpool.cpp
@@ -184,7 +184,7 @@ void Win32LockedPageAllocator::FreeLocked(void* addr, size_t len)
 
 size_t Win32LockedPageAllocator::GetLimit()
 {
-    // TODO is there a limit on windows, how to get it?
+    // TODO is there a limit on Windows, how to get it?
     return std::numeric_limits<size_t>::max();
 }
 #endif
diff --git a/src/test/addrman_tests.cpp b/src/test/addrman_tests.cpp
index 0d8bd90119..6b188a06b4 100644
--- a/src/test/addrman_tests.cpp
+++ b/src/test/addrman_tests.cpp
@@ -491,7 +491,7 @@ BOOST_AUTO_TEST_CASE(caddrinfo_get_new_bucket)
     //  this test could be a security issue.
     BOOST_CHECK(info1.GetNewBucket(nKey1) != info1.GetNewBucket(nKey2));
 
-    // Test: Ports should not effect bucket placement in the addr
+    // Test: Ports should not affect bucket placement in the addr
     CAddrInfo info2 = CAddrInfo(addr2, source1);
     BOOST_CHECK(info1.GetKey() != info2.GetKey());
     BOOST_CHECK_EQUAL(info1.GetNewBucket(nKey1), info2.GetNewBucket(nKey1));
diff --git a/src/test/coins_tests.cpp b/src/test/coins_tests.cpp
index 36e271295a..de7d8f7b90 100644
--- a/src/test/coins_tests.cpp
+++ b/src/test/coins_tests.cpp
@@ -313,7 +313,7 @@ BOOST_AUTO_TEST_CASE(updatecoins_simulation_test)
                     auto utxod = FindRandomFrom(coinbase_coins);
                     // Reuse the exact same coinbase
                     tx = std::get<0>(utxod->second);
-                    // shouldn't be available for reconnection if its been duplicated
+                    // shouldn't be available for reconnection if it's been duplicated
                     disconnected_coins.erase(utxod->first);
 
                     duplicate_coins.insert(utxod->first);
diff --git a/src/test/cuckoocache_tests.cpp b/src/test/cuckoocache_tests.cpp
index 51ebfc3800..ccd5caacd5 100644
--- a/src/test/cuckoocache_tests.cpp
+++ b/src/test/cuckoocache_tests.cpp
@@ -163,7 +163,7 @@ void test_cache_erase(size_t megabytes)
     for (uint32_t i = (n_insert / 2); i < n_insert; ++i)
         set.insert(hashes_insert_copy[i]);
 
-    /** elements that we marked erased but that are still there */
+    /** elements that we marked as erased but are still there */
     size_t count_erased_but_contained = 0;
     /** elements that we did not erase but are older */
     size_t count_stale = 0;
@@ -303,7 +303,7 @@ void test_cache_generations()
     local_rand_ctx = FastRandomContext(true);
 
     // block_activity models a chunk of network activity. n_insert elements are
-    // adde to the cache. The first and last n/4 are stored for removal later
+    // added to the cache. The first and last n/4 are stored for removal later
     // and the middle n/2 are not stored. This models a network which uses half
     // the signatures of recently (since the last block) added transactions
     // immediately and never uses the other half.
diff --git a/src/test/dbwrapper_tests.cpp b/src/test/dbwrapper_tests.cpp
index 754a86344f..6694401a29 100644
--- a/src/test/dbwrapper_tests.cpp
+++ b/src/test/dbwrapper_tests.cpp
@@ -237,7 +237,7 @@ BOOST_AUTO_TEST_CASE(iterator_ordering)
 }
 
 struct StringContentsSerializer {
-    // Used to make two serialized objects the same while letting them have a different lengths
+    // Used to make two serialized objects the same while letting them have different lengths
     // This is a terrible idea
     std::string str;
     StringContentsSerializer() {}
diff --git a/src/test/mempool_tests.cpp b/src/test/mempool_tests.cpp
index 1766c6a093..19cd3b0963 100644
--- a/src/test/mempool_tests.cpp
+++ b/src/test/mempool_tests.cpp
@@ -523,7 +523,7 @@ BOOST_AUTO_TEST_CASE(MempoolSizeLimitTest)
     pool.addUnchecked(tx6.GetHash(), entry.Fee(1100LL).FromTx(tx6));
     pool.addUnchecked(tx7.GetHash(), entry.Fee(9000LL).FromTx(tx7));
 
-    // we only require this remove, at max, 2 txn, because its not clear what we're really optimizing for aside from that
+    // we only require this to remove, at max, 2 txn, because it's not clear what we're really optimizing for aside from that
     pool.TrimToSize(pool.DynamicMemoryUsage() - 1);
     BOOST_CHECK(pool.exists(tx4.GetHash()));
     BOOST_CHECK(pool.exists(tx6.GetHash()));
diff --git a/src/test/txvalidationcache_tests.cpp b/src/test/txvalidationcache_tests.cpp
index 9ec9d6cba3..1aa54189b6 100644
--- a/src/test/txvalidationcache_tests.cpp
+++ b/src/test/txvalidationcache_tests.cpp
@@ -35,7 +35,7 @@ ToMemPool(CMutableTransaction& tx)
 
 BOOST_FIXTURE_TEST_CASE(tx_mempool_block_doublespend, TestChain100Setup)
 {
-    // Make sure skipping validation of transctions that were
+    // Make sure skipping validation of transactions that were
     // validated going into the memory pool does not allow
     // double-spends in blocks to pass validation when they should not.
 
diff --git a/src/tinyformat.h b/src/tinyformat.h
index d34cfaa94f..14b7cd3026 100644
--- a/src/tinyformat.h
+++ b/src/tinyformat.h
@@ -155,7 +155,7 @@ namespace tfm = tinyformat;
 #endif
 
 #ifdef __APPLE__
-// Workaround OSX linker warning: xcode uses different default symbol
+// Workaround OSX linker warning: Xcode uses different default symbol
 // visibilities for static libs vs executables (see issue #25)
 #   define TINYFORMAT_HIDDEN __attribute__((visibility("hidden")))
 #else
@@ -592,7 +592,7 @@ inline const char* printFormatStringLiteral(std::ostream& out, const char* fmt)
 // Formatting options which can't be natively represented using the ostream
 // state are returned in spacePadPositive (for space padded positive numbers)
 // and ntrunc (for truncating conversions).  argIndex is incremented if
-// necessary to pull out variable width and precision .  The function returns a
+// necessary to pull out variable width and precision.  The function returns a
 // pointer to the character after the end of the current format spec.
 inline const char* streamStateFromFormat(std::ostream& out, bool& spacePadPositive,
                                          int& ntrunc, const char* fmtStart,
diff --git a/src/txmempool.h b/src/txmempool.h
index c6a1bf08ce..08a3421015 100644
--- a/src/txmempool.h
+++ b/src/txmempool.h
@@ -689,7 +689,7 @@ private:
 };
 
 /** 
- * CCoinsView that brings transactions from a memorypool into view.
+ * CCoinsView that brings transactions from a mempool into view.
  * It does not check for spendings by memory pool transactions.
  * Instead, it provides access to all Coins which are either unspent in the
  * base CCoinsView, or are outputs from any mempool transaction!
diff --git a/src/undo.h b/src/undo.h
index 7aae034de2..673a1f00ef 100644
--- a/src/undo.h
+++ b/src/undo.h
@@ -15,7 +15,7 @@
  *
  *  Contains the prevout's CTxOut being spent, and its metadata as well
  *  (coinbase or not, height). The serialization contains a dummy value of
- *  zero. This is be compatible with older versions which expect to see
+ *  zero. This is compatible with older versions which expect to see
  *  the transaction version there.
  */
 class TxInUndoSerializer
diff --git a/src/util.h b/src/util.h
index e4170d8aa2..aebd2fd590 100644
--- a/src/util.h
+++ b/src/util.h
@@ -136,7 +136,7 @@ template<typename T, typename... Args> static inline void MarkUsed(const T& t, c
 
 // Be conservative when using LogPrintf/error or other things which
 // unconditionally log to debug.log! It should not be the case that an inbound
-// peer can fill up a users disk with debug.log entries.
+// peer can fill up a user's disk with debug.log entries.
 
 #ifdef USE_COVERAGE
 #define LogPrintf(...) do { MarkUsed(__VA_ARGS__); } while(0)
diff --git a/src/validation.cpp b/src/validation.cpp
index bee890437e..614876ea49 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -949,7 +949,7 @@ static bool AcceptToMemoryPoolWorker(const CChainParams& chainparams, CTxMemPool
 
         // This transaction should only count for fee estimation if:
         // - it isn't a BIP 125 replacement transaction (may not be widely supported)
-        // - it's not being readded during a reorg which bypasses typical mempool fee limits
+        // - it's not being re-added during a reorg which bypasses typical mempool fee limits
         // - the node is not behind
         // - the transaction is not dependent on any other transactions in the mempool
         bool validForFeeEstimation = !fReplacementTransaction && !bypass_limits && IsCurrentForFeeEstimation() && pool.HasNoInputsOf(tx);
@@ -1852,7 +1852,7 @@ bool CChainState::ConnectBlock(const CBlock& block, CValidationState& state, CBl
     // Once BIP34 activated it was not possible to create new duplicate coinbases and thus other than starting
     // with the 2 existing duplicate coinbase pairs, not possible to create overwriting txs.  But by the
     // time BIP34 activated, in each of the existing pairs the duplicate coinbase had overwritten the first
-    // before the first had been spent.  Since those coinbases are sufficiently buried its no longer possible to create further
+    // before the first had been spent.  Since those coinbases are sufficiently buried it's no longer possible to create further
     // duplicate transactions descending from the known pairs either.
     // If we're on the known chain at height greater than where BIP34 activated, we can save the db accesses needed for the BIP30 check.
 
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 7ad9efff70..3dbc01c068 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -2015,7 +2015,7 @@ UniValue listsinceblock(const JSONRPCRequest& request)
             "  ],\n"
             "  \"removed\": [\n"
             "    <structure is the same as \"transactions\" above, only present if include_removed=true>\n"
-            "    Note: transactions that were readded in the active chain will appear as-is in this array, and may thus have a positive confirmation count.\n"
+            "    Note: transactions that were re-added in the active chain will appear as-is in this array, and may thus have a positive confirmation count.\n"
             "  ],\n"
             "  \"lastblock\": \"lastblockhash\"     (string) The hash of the block (target_confirmations-1) from the best block on the main chain. This is typically used to feed back into listsinceblock the next time you call it. So you would generally use a target_confirmations of say 6, so you will be continually re-notified of transactions until they've reached 6 confirmations plus any new ones\n"
             "}\n"
@@ -3578,7 +3578,7 @@ UniValue rescanblockchain(const JSONRPCRequest& request)
                 throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid stop_height");
             }
             else if (pindexStop->nHeight < pindexStart->nHeight) {
-                throw JSONRPCError(RPC_INVALID_PARAMETER, "stop_height must be greater then start_height");
+                throw JSONRPCError(RPC_INVALID_PARAMETER, "stop_height must be greater than start_height");
             }
         }
     }
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index bd5094085e..0d21570858 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -1269,7 +1269,7 @@ void CWallet::BlockUntilSyncedToCurrentChain() {
         // chainActive.Tip()...
         // We could also take cs_wallet here, and call m_last_block_processed
         // protected by cs_wallet instead of cs_main, but as long as we need
-        // cs_main here anyway, its easier to just call it cs_main-protected.
+        // cs_main here anyway, it's easier to just call it cs_main-protected.
         LOCK(cs_main);
         const CBlockIndex* initialChainTip = chainActive.Tip();
 
@@ -4186,8 +4186,8 @@ bool CWalletTx::AcceptToMemoryPool(const CAmount& nAbsurdFee, CValidationState&
     // We must set fInMempool here - while it will be re-set to true by the
     // entered-mempool callback, if we did not there would be a race where a
     // user could call sendmoney in a loop and hit spurious out of funds errors
-    // because we think that the transaction they just generated's change is
-    // unavailable as we're not yet aware its in mempool.
+    // because we think that this newly generated transaction's change is
+    // unavailable as we're not yet aware that it is in the mempool.
     bool ret = ::AcceptToMemoryPool(mempool, state, tx, nullptr /* pfMissingInputs */,
                                 nullptr /* plTxnReplaced */, false /* bypass_limits */, nAbsurdFee);
     fInMempool |= ret;
diff --git a/test/functional/example_test.py b/test/functional/example_test.py
index 12be685ecf..05d1c1bf4e 100755
--- a/test/functional/example_test.py
+++ b/test/functional/example_test.py
@@ -38,7 +38,7 @@ class BaseNode(P2PInterface):
     def __init__(self):
         """Initialize the P2PInterface
 
-        Used to inialize custom properties for the Node that aren't
+        Used to initialize custom properties for the Node that aren't
         included by default in the base class. Be aware that the P2PInterface
         base class already stores a counter for each P2P message type and the
         last received message of each type, which should be sufficient for the
diff --git a/test/functional/feature_maxuploadtarget.py b/test/functional/feature_maxuploadtarget.py
index 45336ee801..11c7de2ba0 100755
--- a/test/functional/feature_maxuploadtarget.py
+++ b/test/functional/feature_maxuploadtarget.py
@@ -6,7 +6,7 @@
 
 * Verify that getdata requests for old blocks (>1week) are dropped
 if uploadtarget has been reached.
-* Verify that getdata requests for recent blocks are respecteved even
+* Verify that getdata requests for recent blocks are respected even
 if uploadtarget has been reached.
 * Verify that the upload counters are reset after 24 hours.
 """
diff --git a/test/functional/feature_pruning.py b/test/functional/feature_pruning.py
index 49ad7f838c..365ff08d28 100755
--- a/test/functional/feature_pruning.py
+++ b/test/functional/feature_pruning.py
@@ -190,8 +190,8 @@ class PruneTest(BitcoinTestFramework):
 
         # Verify that we have enough history to reorg back to the fork point
         # Although this is more than 288 blocks, because this chain was written more recently
-        # and only its other 299 small and 220 large block are in the block files after it,
-        # its expected to still be retained
+        # and only its other 299 small and 220 large blocks are in the block files after it,
+        # it is expected to still be retained
         self.nodes[2].getblock(self.nodes[2].getblockhash(self.forkheight))
 
         first_reorg_height = self.nodes[2].getblockcount()
diff --git a/test/functional/interface_rest.py b/test/functional/interface_rest.py
index 8440f13a0d..c6cb4c54cd 100755
--- a/test/functional/interface_rest.py
+++ b/test/functional/interface_rest.py
@@ -107,7 +107,7 @@ class RESTTest (BitcoinTestFramework):
         #check chainTip response
         assert_equal(json_obj['chaintipHash'], bb_hash)
 
-        #make sure there is no utox in the response because this oupoint has been spent
+        #make sure there is no utxo in the response because this oupoint has been spent
         assert_equal(len(json_obj['utxos']), 0)
 
         #check bitmap
diff --git a/test/functional/mempool_persist.py b/test/functional/mempool_persist.py
index 53748df915..76e5e02c01 100755
--- a/test/functional/mempool_persist.py
+++ b/test/functional/mempool_persist.py
@@ -29,7 +29,7 @@ Test is as follows:
     transactions in its mempool. This tests that -persistmempool=0
     does not overwrite a previously valid mempool stored on disk.
   - Remove node0 mempool.dat and verify savemempool RPC recreates it
-    and verify that node1 can load it and has 5 transaction in its
+    and verify that node1 can load it and has 5 transactions in its
     mempool.
   - Verify that savemempool throws when the RPC is called if
     node1 can't write to disk.
diff --git a/test/functional/mining_prioritisetransaction.py b/test/functional/mining_prioritisetransaction.py
index 32e2b47fc9..e754dd31ad 100755
--- a/test/functional/mining_prioritisetransaction.py
+++ b/test/functional/mining_prioritisetransaction.py
@@ -124,7 +124,7 @@ class PrioritiseTransactionTest(BitcoinTestFramework):
         assert(tx_id not in self.nodes[0].getrawmempool())
 
         # This is a less than 1000-byte transaction, so just set the fee
-        # to be the minimum for a 1000 byte transaction and check that it is
+        # to be the minimum for a 1000-byte transaction and check that it is
         # accepted.
         self.nodes[0].prioritisetransaction(txid=tx_id, fee_delta=int(self.relayfee*COIN))
 
diff --git a/test/functional/p2p_compactblocks.py b/test/functional/p2p_compactblocks.py
index d9f461a049..8354505b16 100755
--- a/test/functional/p2p_compactblocks.py
+++ b/test/functional/p2p_compactblocks.py
@@ -548,7 +548,7 @@ class CompactBlocksTest(BitcoinTestFramework):
         # Note that it's possible for bitcoind to be smart enough to know we're
         # lying, since it could check to see if the shortid matches what we're
         # sending, and eg disconnect us for misbehavior.  If that behavior
-        # change were made, we could just modify this test by having a
+        # change was made, we could just modify this test by having a
         # different peer provide the block further down, so that we're still
         # verifying that the block isn't marked bad permanently. This is good
         # enough for now.
diff --git a/test/functional/p2p_leak.py b/test/functional/p2p_leak.py
index ce4e6e9144..198dcc1490 100755
--- a/test/functional/p2p_leak.py
+++ b/test/functional/p2p_leak.py
@@ -7,7 +7,7 @@
 A node should never send anything other than VERSION/VERACK/REJECT until it's
 received a VERACK.
 
-This test connects to a node and sends it a few messages, trying to intice it
+This test connects to a node and sends it a few messages, trying to entice it
 into sending us something it shouldn't.
 
 Also test that nodes that send unsupported service bits to bitcoind are disconnected
diff --git a/test/functional/p2p_node_network_limited.py b/test/functional/p2p_node_network_limited.py
index 81a41d6a97..301d8c181a 100755
--- a/test/functional/p2p_node_network_limited.py
+++ b/test/functional/p2p_node_network_limited.py
@@ -64,7 +64,7 @@ class NodeNetworkLimitedTest(BitcoinTestFramework):
         blocks = self.nodes[1].generate(292)
         sync_blocks([self.nodes[0], self.nodes[1]])
 
-        self.log.info("Make sure we can max retrive block at tip-288.")
+        self.log.info("Make sure we can max retrieve block at tip-288.")
         node.send_getdata_for_block(blocks[1])  # last block in valid range
         node.wait_for_block(int(blocks[1], 16), timeout=3)
 
diff --git a/test/functional/p2p_segwit.py b/test/functional/p2p_segwit.py
index 20e4805df0..915f26eda6 100755
--- a/test/functional/p2p_segwit.py
+++ b/test/functional/p2p_segwit.py
@@ -1511,7 +1511,7 @@ class SegWitTest(BitcoinTestFramework):
         # Make sure that this peer thinks segwit has activated.
         assert(get_bip9_status(self.nodes[node_id], 'segwit')['status'] == "active")
 
-        # Make sure this peers blocks match those of node0.
+        # Make sure this peer's blocks match those of node0.
         height = self.nodes[node_id].getblockcount()
         while height >= 0:
             block_hash = self.nodes[node_id].getblockhash(height)
diff --git a/test/functional/p2p_unrequested_blocks.py b/test/functional/p2p_unrequested_blocks.py
index 672626f15b..53b2856eb5 100755
--- a/test/functional/p2p_unrequested_blocks.py
+++ b/test/functional/p2p_unrequested_blocks.py
@@ -166,7 +166,7 @@ class AcceptBlockTest(BitcoinTestFramework):
         self.log.info("Unrequested more-work block accepted")
 
         # 4c. Now mine 288 more blocks and deliver; all should be processed but
-        # the last (height-too-high) on node (as long as its not missing any headers)
+        # the last (height-too-high) on node (as long as it is not missing any headers)
         tip = block_h3
         all_blocks = []
         for i in range(288):
diff --git a/test/functional/rpc_bind.py b/test/functional/rpc_bind.py
index d43c2cd5d0..414da02072 100755
--- a/test/functional/rpc_bind.py
+++ b/test/functional/rpc_bind.py
@@ -55,7 +55,7 @@ class RPCBindTest(BitcoinTestFramework):
     def run_test(self):
         # due to OS-specific network stats queries, this test works only on Linux
         if not sys.platform.startswith('linux'):
-            raise SkipTest("This test can only be run on linux.")
+            raise SkipTest("This test can only be run on Linux.")
         # find the first non-loopback interface for testing
         non_loopback_ip = None
         for name,ip in all_interfaces():
diff --git a/test/functional/test_framework/messages.py b/test/functional/test_framework/messages.py
index e032be1337..ee573e01cc 100755
--- a/test/functional/test_framework/messages.py
+++ b/test/functional/test_framework/messages.py
@@ -4,7 +4,7 @@
 # Copyright (c) 2010-2017 The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
-"""Bitcoin test framework primitive and message strcutures
+"""Bitcoin test framework primitive and message structures
 
 CBlock, CTransaction, CBlockHeader, CTxIn, CTxOut, etc....:
     data structures that should map to corresponding structures in
diff --git a/test/functional/test_framework/mininode.py b/test/functional/test_framework/mininode.py
index 99d0abc3f9..f1f7d0c0cd 100755
--- a/test/functional/test_framework/mininode.py
+++ b/test/functional/test_framework/mininode.py
@@ -405,7 +405,7 @@ class P2PInterface(P2PConnection):
 
 
 # Keep our own socket map for asyncore, so that we can track disconnects
-# ourselves (to workaround an issue with closing an asyncore socket when
+# ourselves (to work around an issue with closing an asyncore socket when
 # using select)
 mininode_socket_map = dict()
 
@@ -424,7 +424,7 @@ class NetworkThread(threading.Thread):
     def run(self):
         while mininode_socket_map:
             # We check for whether to disconnect outside of the asyncore
-            # loop to workaround the behavior of asyncore when using
+            # loop to work around the behavior of asyncore when using
             # select
             disconnected = []
             for fd, obj in mininode_socket_map.items():
diff --git a/test/functional/test_framework/test_framework.py b/test/functional/test_framework/test_framework.py
index 8efac9c475..8233087faa 100755
--- a/test/functional/test_framework/test_framework.py
+++ b/test/functional/test_framework/test_framework.py
@@ -335,7 +335,7 @@ class BitcoinTestFramework():
         blockchain.  If the cached version of the blockchain is used without
         mocktime then the mempools will not sync due to IBD.
 
-        For backwared compatibility of the python scripts with previous
+        For backward compatibility of the python scripts with previous
         versions of the cache, this helper function sets mocktime to Jan 1,
         2014 + (201 * 10 * 60)"""
         self.mocktime = 1388534400 + (201 * 10 * 60)
diff --git a/test/functional/test_framework/test_node.py b/test/functional/test_framework/test_node.py
index 86e44e4c97..13f5d224c7 100755
--- a/test/functional/test_framework/test_node.py
+++ b/test/functional/test_framework/test_node.py
@@ -61,7 +61,7 @@ class TestNode():
         if extra_conf != None:
             append_config(dirname, i, extra_conf)
         # Most callers will just need to add extra args to the standard list below.
-        # For those callers that need more flexibity, they can just set the args property directly.
+        # For those callers that need more flexibility, they can just set the args property directly.
         # Note that common args are set in the config file (see initialize_datadir)
         self.extra_args = extra_args
         self.args = [self.binary, "-datadir=" + self.datadir, "-logtimemicros", "-debug", "-debugexclude=libevent", "-debugexclude=leveldb", "-mocktime=" + str(mocktime), "-uacomment=testnode%d" % i]
diff --git a/test/functional/wallet_abandonconflict.py b/test/functional/wallet_abandonconflict.py
index 7e0635d80f..d5ef08d782 100755
--- a/test/functional/wallet_abandonconflict.py
+++ b/test/functional/wallet_abandonconflict.py
@@ -109,7 +109,7 @@ class AbandonConflictTest(BitcoinTestFramework):
         assert_equal(len(self.nodes[0].getrawmempool()), 0)
         assert_equal(self.nodes[0].getbalance(), balance)
 
-        # But if its received again then it is unabandoned
+        # But if it is received again then it is unabandoned
         # And since now in mempool, the change is available
         # But its child tx remains abandoned
         self.nodes[0].sendrawtransaction(signed["hex"])
@@ -117,7 +117,7 @@ class AbandonConflictTest(BitcoinTestFramework):
         assert_equal(newbalance, balance - Decimal("20") + Decimal("14.99998"))
         balance = newbalance
 
-        # Send child tx again so its unabandoned
+        # Send child tx again so it is unabandoned
         self.nodes[0].sendrawtransaction(signed2["hex"])
         newbalance = self.nodes[0].getbalance()
         assert_equal(newbalance, balance - Decimal("10") - Decimal("14.99998") + Decimal("24.9996"))
diff --git a/test/functional/wallet_basic.py b/test/functional/wallet_basic.py
index f686cb6ea5..934b9444a0 100755
--- a/test/functional/wallet_basic.py
+++ b/test/functional/wallet_basic.py
@@ -283,7 +283,7 @@ class WalletTest(BitcoinTestFramework):
         sync_blocks(self.nodes[0:3])
         node_2_bal += 2
 
-        #tx should be added to balance because after restarting the nodes tx should be broadcastet
+        #tx should be added to balance because after restarting the nodes tx should be broadcast
         assert_equal(self.nodes[2].getbalance(), node_2_bal)
 
         #send a tx with value in a string (PR#6380 +)
diff --git a/test/functional/wallet_listsinceblock.py b/test/functional/wallet_listsinceblock.py
index 25e2716661..0f2434ff0d 100755
--- a/test/functional/wallet_listsinceblock.py
+++ b/test/functional/wallet_listsinceblock.py
@@ -211,7 +211,7 @@ class ListSinceBlockTest (BitcoinTestFramework):
         1. tx1 is listed in listsinceblock.
         2. It is included in 'removed' as it was removed, even though it is now
            present in a different block.
-        3. It is listed with a confirmations count of 2 (bb3, bb4), not
+        3. It is listed with a confirmation count of 2 (bb3, bb4), not
            3 (aa1, aa2, aa3).
         '''