diff --git a/index.html b/index.html
index 5222f69fa..217aa08ba 100644
--- a/index.html
+++ b/index.html
@@ -2428,7 +2428,7 @@ <h2 id="changelog">Change Log</h2>
             <tt>_.extend</tt> only iterates over the object's own properties.
           </li>
           <li>
-            Falsey guards are no longer needed in <tt>_.extend</tt> and
+            Falsy guards are no longer needed in <tt>_.extend</tt> and
             <tt>_.defaults</tt>&mdash;if the passed in argument isn't a JavaScript
             object it's just returned.
           </li>
diff --git a/test/arrays.js b/test/arrays.js
index 023734601..47b1bacdf 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -167,7 +167,7 @@
     assert.deepEqual(_.uniq(list, true, iterator), expected, 'uses the result of `iterator` for uniqueness comparisons (sorted case)');
     assert.deepEqual(_.uniq(list, true, 'score'), expected, 'when `iterator` is a string, uses that key for comparisons (sorted case)');
 
-    assert.deepEqual(_.uniq([{0: 1}, {0: 1}, {0: 1}, {0: 2}], 0), [{0: 1}, {0: 2}], 'can use falsey pluck like iterator');
+    assert.deepEqual(_.uniq([{0: 1}, {0: 1}, {0: 1}, {0: 2}], 0), [{0: 1}, {0: 2}], 'can use falsy pluck like iterator');
 
     var result = (function(){ return _.uniq(arguments); }(1, 2, 1, 3, 1, 4));
     assert.deepEqual(result, [1, 2, 3, 4], 'works on an arguments object');
@@ -370,7 +370,7 @@
 
   QUnit.test('lastIndexOf', function(assert) {
     var numbers = [1, 0, 1];
-    var falsey = [void 0, '', 0, false, NaN, null, void 0];
+    var falsy = [void 0, '', 0, false, NaN, null, void 0];
     assert.strictEqual(_.lastIndexOf(numbers, 1), 2);
 
     numbers = [1, 0, 1, 0, 0, 1, 0, 0, 0];
@@ -406,15 +406,15 @@
       assert.strictEqual(_.lastIndexOf(array, '', fromIndex), -1);
     });
 
-    var expected = _.map(falsey, function(value) {
+    var expected = _.map(falsy, function(value) {
       return typeof value == 'number' ? -1 : 5;
     });
 
-    var actual = _.map(falsey, function(fromIndex) {
+    var actual = _.map(falsy, function(fromIndex) {
       return _.lastIndexOf(array, 3, fromIndex);
     });
 
-    assert.deepEqual(actual, expected, 'should treat falsey `fromIndex` values, except `0` and `NaN`, as `array.length`');
+    assert.deepEqual(actual, expected, 'should treat falsy `fromIndex` values, except `0` and `NaN`, as `array.length`');
     assert.strictEqual(_.lastIndexOf(array, 3, '1'), 5, 'should treat non-number `fromIndex` values as `array.length`');
     assert.strictEqual(_.lastIndexOf(array, 3, true), 5, 'should treat non-number `fromIndex` values as `array.length`');
 
diff --git a/test/objects.js b/test/objects.js
index ac27186a6..e2ebcda52 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -922,7 +922,7 @@
     // Deep property access
     assert.strictEqual(_.property('a')({a: 1}), 1, 'can get a direct property');
     assert.strictEqual(_.property(['a', 'b'])({a: {b: 2}}), 2, 'can get a nested property');
-    assert.strictEqual(_.property(['a'])({a: false}), false, 'can fetch falsey values');
+    assert.strictEqual(_.property(['a'])({a: false}), false, 'can fetch falsy values');
     assert.strictEqual(_.property(['x', 'y'])({x: {y: null}}), null, 'can fetch null values deeply');
     assert.strictEqual(_.property(['x', 'y'])({x: null}), void 0, 'does not crash on property access of nested non-objects');
     assert.strictEqual(_.property([])({x: 'y'}), void 0, 'returns `undefined` for a path that is an empty array');
@@ -988,7 +988,7 @@
 
     //null edge cases
     var oCon = {constructor: Object};
-    assert.deepEqual(_.map([null, void 0, 5, {}], _.partial(_.isMatch, _, oCon)), [false, false, false, true], 'doesnt falsey match constructor on undefined/null');
+    assert.deepEqual(_.map([null, void 0, 5, {}], _.partial(_.isMatch, _, oCon)), [false, false, false, true], 'doesnt falsy match constructor on undefined/null');
   });
 
   QUnit.test('matcher', function(assert) {
@@ -1045,7 +1045,7 @@
 
     //null edge cases
     var oCon = _.matcher({constructor: Object});
-    assert.deepEqual(_.map([null, void 0, 5, {}], oCon), [false, false, false, true], 'doesnt falsey match constructor on undefined/null');
+    assert.deepEqual(_.map([null, void 0, 5, {}], oCon), [false, false, false, true], 'doesnt falsy match constructor on undefined/null');
   });
 
   QUnit.test('matches', function(assert) {
diff --git a/test/utility.js b/test/utility.js
index 2c6095a9c..1fe3220e1 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -345,7 +345,7 @@
     assert.strictEqual(_.result({a: 1}, 'b', 2), 2, 'uses the fallback value when property is missing');
     assert.strictEqual(_.result({a: 1}, ['b', 'c'], 2), 2, 'uses the fallback value when any property is missing');
     assert.strictEqual(_.result({a: void 0}, ['a'], 1), 1, 'uses the fallback when value is undefined');
-    assert.strictEqual(_.result({a: false}, ['a'], 'foo'), false, 'can fetch falsey values');
+    assert.strictEqual(_.result({a: false}, ['a'], 'foo'), false, 'can fetch falsy values');
 
     assert.strictEqual(_.result({a: func}, 'a'), 'f', 'can get a direct method');
     assert.strictEqual(_.result({a: {b: func}}, ['a', 'b']), 'f', 'can get a nested method');