diff --git a/docs/rules/array-callback-return.md b/docs/rules/array-callback-return.md
index c0a5ad8ab35..84bf0e7710d 100644
--- a/docs/rules/array-callback-return.md
+++ b/docs/rules/array-callback-return.md
@@ -13,7 +13,7 @@ var indexMap = myArray.reduce(function(memo, item, index) {
 ## Rule Details
 
 This rule enforces usage of `return` statement in callbacks of array's methods.
-Additionaly, it may also enforce the `forEach` array method callback to __not__ return a value by using the `checkForEach` option.
+Additionally, it may also enforce the `forEach` array method callback to __not__ return a value by using the `checkForEach` option.
 
 This rule finds callback functions of the following methods, then checks usage of `return` statement.
 
diff --git a/lib/rules/key-spacing.js b/lib/rules/key-spacing.js
index c405043794c..57abb00b06e 100644
--- a/lib/rules/key-spacing.js
+++ b/lib/rules/key-spacing.js
@@ -45,7 +45,7 @@ function isSingleLine(node) {
 /**
  * Checks whether the properties on a single line.
  * @param {ASTNode[]} properties List of Property AST nodes.
- * @returns {boolean} True if all properies is on a single line.
+ * @returns {boolean} True if all properties is on a single line.
  */
 function isSingleLineProperties(properties) {
     const [firstProp] = properties,
diff --git a/lib/rules/no-lone-blocks.js b/lib/rules/no-lone-blocks.js
index d7069887b8e..290784b82ea 100644
--- a/lib/rules/no-lone-blocks.js
+++ b/lib/rules/no-lone-blocks.js
@@ -49,7 +49,7 @@ module.exports = {
         }
 
         /**
-         * Checks for any ocurrence of a BlockStatement in a place where lists of statements can appear
+         * Checks for any occurrence of a BlockStatement in a place where lists of statements can appear
          * @param {ASTNode} node The node to check
          * @returns {boolean} True if the node is a lone block.
          */
diff --git a/tests/bench/large.js b/tests/bench/large.js
index 24ba7271c9f..c94e88568d4 100644
--- a/tests/bench/large.js
+++ b/tests/bench/large.js
@@ -52779,7 +52779,7 @@ var state    = require("./state.js").state;
 var style    = require("./style.js");
 
 // We need this module here because environments such as IE and Rhino
-// don't necessarilly expose the 'console' API and browserify uses
+// don't necessarily expose the 'console' API and browserify uses
 // it to log things. It's a sad state of affair, really.
 var console = require("console-browserify");
 
@@ -52838,7 +52838,7 @@ var JSHINT = (function () {
       immed       : true, // if immediate invocations must be wrapped in parens
       iterator    : true, // if the `__iterator__` property should be allowed
       jquery      : true, // if jQuery globals should be predefined
-      lastsemic   : true, // if semicolons may be ommitted for the trailing
+      lastsemic   : true, // if semicolons may be omitted for the trailing
                           // statements inside of a one-line blocks.
       laxbreak    : true, // if line breaks should not be checked
       laxcomma    : true, // if line breaks should not be checked around commas
@@ -59115,7 +59115,7 @@ Lexer.prototype = {
   },
 
   /*
-   * Scan for any occurence of mixed tabs and spaces. If smarttabs option
+   * Scan for any occurrence of mixed tabs and spaces. If smarttabs option
    * is on, ignore tabs followed by spaces.
    *
    * Tabs followed by one space followed by a block comment are allowed.
@@ -59135,7 +59135,7 @@ Lexer.prototype = {
   },
 
   /*
-   * Scan for any occurence of non-breaking spaces. Non-breaking spaces
+   * Scan for any occurrence of non-breaking spaces. Non-breaking spaces
    * can be mistakenly typed on OS X with option-space. Non UTF-8 web
    * pages with non-breaking pages produce syntax errors.
    */
@@ -59288,7 +59288,7 @@ Lexer.prototype = {
 
   /*
    * Produce the next token. This function is called by advance() to get
-   * the next token. It retuns a token in a JSLint-compatible format.
+   * the next token. It returns a token in a JSLint-compatible format.
    */
   token: function () {
     /*jshint loopfunc:true */
diff --git a/tests/bench/small.js b/tests/bench/small.js
index b61cf5c4c78..d2cdf354652 100644
--- a/tests/bench/small.js
+++ b/tests/bench/small.js
@@ -1596,7 +1596,7 @@ ko.exportSymbol('computed', ko.dependentObservable); // Make "ko.computed" an al
 ko.exportSymbol('isComputed', ko.isComputed);
 
 (function() {
-    var maxNestedObservableDepth = 10; // Escape the (unlikely) pathalogical case where an observable's current value is itself (or similar reference cycle)
+    var maxNestedObservableDepth = 10; // Escape the (unlikely) pathological case where an observable's current value is itself (or similar reference cycle)
 
     ko.toJS = function(rootObject) {
         if (arguments.length == 0)
diff --git a/tests/lib/cli-engine/cli-engine.js b/tests/lib/cli-engine/cli-engine.js
index 6880bf9f98f..36d7602bcef 100644
--- a/tests/lib/cli-engine/cli-engine.js
+++ b/tests/lib/cli-engine/cli-engine.js
@@ -3208,7 +3208,7 @@ describe("CLIEngine", () => {
                 `);
             });
 
-            it("should use overriden processor; should report HTML blocks but not fix HTML blocks if the processor for '*.html' didn't support autofix.", () => {
+            it("should use overridden processor; should report HTML blocks but not fix HTML blocks if the processor for '*.html' didn't support autofix.", () => {
                 CLIEngine = defineCLIEngineWithInMemoryFileSystem({
                     cwd: () => root,
                     files: {
diff --git a/tests/lib/cli-engine/config-array-factory.js b/tests/lib/cli-engine/config-array-factory.js
index 20f256bbe61..e938277c2f0 100644
--- a/tests/lib/cli-engine/config-array-factory.js
+++ b/tests/lib/cli-engine/config-array-factory.js
@@ -1026,7 +1026,7 @@ describe("ConfigArrayFactory", () => {
                     });
                 });
 
-                it("should have the given config data at the thrid element.", () => {
+                it("should have the given config data at the third element.", () => {
                     assertConfigArrayElement(configArray[2], {
                         name: ".eslintrc",
                         rules: { eqeqeq: 1 }
diff --git a/tests/lib/rules/id-blacklist.js b/tests/lib/rules/id-blacklist.js
index 3d40beeb578..a900924373f 100644
--- a/tests/lib/rules/id-blacklist.js
+++ b/tests/lib/rules/id-blacklist.js
@@ -367,7 +367,7 @@ ruleTester.run("id-blacklist", rule, {
                     column: 5
                 },
 
-                // reports each occurence of local identifier, although it's renamed in this export specifier
+                // reports each occurrence of local identifier, although it's renamed in this export specifier
                 {
                     messageId: "blacklisted",
                     data: { name: "foo" },
diff --git a/tests/lib/rules/keyword-spacing.js b/tests/lib/rules/keyword-spacing.js
index 9971facf18c..f7f5ccab2b7 100644
--- a/tests/lib/rules/keyword-spacing.js
+++ b/tests/lib/rules/keyword-spacing.js
@@ -34,7 +34,7 @@ const NEITHER = { before: false, after: false };
  *         after: false,
  *         overrides: {as: {before: true, after: true}}
  *     }
- * @param {string} keyword A keyword to be overriden.
+ * @param {string} keyword A keyword to be overridden.
  * @param {Object} value A value to override.
  * @returns {Object} An option object to test an "overrides" option.
  */
diff --git a/tests/lib/rules/no-implied-eval.js b/tests/lib/rules/no-implied-eval.js
index 0cd1d188ae0..1c712f450f0 100644
--- a/tests/lib/rules/no-implied-eval.js
+++ b/tests/lib/rules/no-implied-eval.js
@@ -150,7 +150,7 @@ ruleTester.run("no-implied-eval", rule, {
         { code: "window.window.setTimeout(`foo${bar}`)", parserOptions: { ecmaVersion: 6 }, env: { browser: true }, errors: [expectedError] },
         { code: "global.global.setTimeout(`foo${bar}`)", parserOptions: { ecmaVersion: 6 }, env: { node: true }, errors: [expectedError] },
 
-        // string concatination
+        // string concatenation
         { code: "setTimeout('foo' + bar)", errors: [expectedError] },
         { code: "setTimeout(foo + 'bar')", errors: [expectedError] },
         { code: "setTimeout(`foo` + bar)", parserOptions: { ecmaVersion: 6 }, errors: [expectedError] },
diff --git a/tests/performance/jshint.js b/tests/performance/jshint.js
index 6ebb5fb4980..f79d6ed15ff 100644
--- a/tests/performance/jshint.js
+++ b/tests/performance/jshint.js
@@ -1111,7 +1111,7 @@ var state    = require("./state.js").state;
 var style    = require("./style.js");
 
 // We need this module here because environments such as IE and Rhino
-// don't necessarilly expose the 'console' API and browserify uses
+// don't necessarily expose the 'console' API and browserify uses
 // it to log things. It's a sad state of affair, really.
 var console = require("console-browserify");
 
@@ -1169,7 +1169,7 @@ var JSHINT = (function () {
 			immed       : true, // if immediate invocations must be wrapped in parens
 			iterator    : true, // if the `__iterator__` property should be allowed
 			jquery      : true, // if jQuery globals should be predefined
-			lastsemic   : true, // if semicolons may be ommitted for the trailing
+			lastsemic   : true, // if semicolons may be omitted for the trailing
 			                    // statements inside of a one-line blocks.
 			laxbreak    : true, // if line breaks should not be checked
 			laxcomma    : true, // if line breaks should not be checked around commas
@@ -7466,7 +7466,7 @@ Lexer.prototype = {
 	},
 
 	/*
-	 * Scan for any occurence of mixed tabs and spaces. If smarttabs option
+	 * Scan for any occurrence of mixed tabs and spaces. If smarttabs option
 	 * is on, ignore tabs followed by spaces.
 	 *
 	 * Tabs followed by one space followed by a block comment are allowed.
@@ -7594,7 +7594,7 @@ Lexer.prototype = {
 
 	/*
 	 * Produce the next token. This function is called by advance() to get
-	 * the next token. It retuns a token in a JSLint-compatible format.
+	 * the next token. It returns a token in a JSLint-compatible format.
 	 */
 	token: function () {
 		/*jshint loopfunc:true */