diff --git a/dist/classified.js b/dist/classified.js
index 26267fc..c110e19 100644
--- a/dist/classified.js
+++ b/dist/classified.js
@@ -786,6 +786,16 @@ classify(String, function() {
     return this.replace(/[-_]+/g, ' ').capitalize();
   });
   
+  // Returns the plural form of the word in the string.
+  def('pluralize', function() {
+    return Inflector.pluralize(this);
+  });
+  
+  // The reverse of `pluralize`, returns the singular form of a word in a string.
+  def('singularize', function() {
+    return Inflector.singularize(this);
+  });
+  
   // Capitalizes all the words and replaces some characters in the string to create a nicer looking title.
   def('titleize', function() {
     return this.underscore().humanize().replace(/\b('?[a-z])/g, function(match, word) {
diff --git a/dist/classified.min.js b/dist/classified.min.js
index 18b149c..00af05c 100644
--- a/dist/classified.min.js
+++ b/dist/classified.min.js
@@ -9,4 +9,4 @@
 //  - classify  0.10.7  http://github.com/petebrowne/classify
 //
 //--------------------------------------------------------------------------
-(function(){var h=this,d=h.def,j=h.classify,l=h.module,m=h.include,n=h.extend,g=h.alias,i=h.$break={};n(Object,function(){var f=Object.prototype.toString;d('isUndefined',function(a){return typeof a==='undefined'});d('isDefined',function(a){return!Object.isUndefined(a)});d('isObject',function(a){if(a==null)return false;return f.call(a)==='[object Object]'});d('isFunction',function(a){return f.call(a)==='[object Function]'});d('isString',function(a){return f.call(a)==='[object String]'});d('isNumber',function(a){return f.call(a)==='[object Number]'});d('isDate',function(a){return f.call(a)==='[object Date]'});d('isRegExp',function(a){return f.call(a)==='[object RegExp]'});if(Object.isFunction(Array.isArray)){d('isArray',Array.isArray)}else{d('isArray',function(a){return f.call(a)==='[object Array]'})}d('extend',function(a,b){for(var c in b){a[c]=b[c]}return a});g('merge','extend');d('clone',function(a){return this.extend({},a)});d('each',function(a,b,c){for(var e in 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\ No newline at end of file
+(function(){var h=this,d=h.def,j=h.classify,l=h.module,m=h.include,n=h.extend,g=h.alias,i=h.$break={};n(Object,function(){var f=Object.prototype.toString;d('isUndefined',function(a){return typeof a==='undefined'});d('isDefined',function(a){return!Object.isUndefined(a)});d('isObject',function(a){if(a==null)return false;return f.call(a)==='[object Object]'});d('isFunction',function(a){return f.call(a)==='[object Function]'});d('isString',function(a){return f.call(a)==='[object String]'});d('isNumber',function(a){return f.call(a)==='[object Number]'});d('isDate',function(a){return f.call(a)==='[object Date]'});d('isRegExp',function(a){return f.call(a)==='[object RegExp]'});if(Object.isFunction(Array.isArray)){d('isArray',Array.isArray)}else{d('isArray',function(a){return f.call(a)==='[object Array]'})}d('extend',function(a,b){for(var c in b){a[c]=b[c]}return a});g('merge','extend');d('clone',function(a){return this.extend({},a)});d('each',function(a,b,c){for(var e in 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round sin sqrt tan'.split(' '))});j(RegExp,function(){d(this,'escape',function(a){return String(a).replace(/([.*+?^=!:${}()|[\]\/\\])/g,'\\$1')})});j(String,function(){d('endsWith',function(a){var b=this.length-a.length;return b>=0&&this.indexOf(a,b)===b});d('include',function(a){return this.indexOf(a)>-1});g('contains','include');d('isBlank',function(){return/^\s*$/.test(this)});d('isEmpty',function(){return this==''});d('startsWith',function(a){return this.lastIndexOf(a,0)===0});d('strip',function(){return this.replace(/^\s+/,'').replace(/\s+$/,'')});d('camelize',function(){return this.replace(/[-_]+(.)?/g,function(a,b){return b?b.toUpperCase():''})});d('capitalize',function(){return this.charAt(0).toUpperCase()+this.substring(1)});d('constantize',function(){var b=this.split('.'),c=h;b.each(function(a){c=c[a];if(Object.isUndefined(c))throw i;});return c});d('dasherize',function(){return this.replace(/([A-Z]+)([A-Z][a-z])/g,'$1-$2').replace(/([a-z\d])([A-Z])/g,'$1-$2').replace(/_/g,'-').toLowerCase()});d('humanize',function(){return this.replace(/[-_]+/g,' ').capitalize()});d('pluralize',function(){return Inflector.pluralize(this)});d('singularize',function(){return Inflector.singularize(this)});d('titleize',function(){return this.underscore().humanize().replace(/\b('?[a-z])/g,function(a,b){return b.capitalize()})});g('toTitleCase','titleize');d('underscore',function(){return this.replace(/([A-Z]+)([A-Z][a-z])/g,'$1_$2').replace(/([a-z\d])([A-Z])/g,'$1_$2').replace(/-/g,'_').toLowerCase()})});(function(a,b,c){a(/$/,'s');a(/s$/i,'s');a(/(ax|test)is$/i,'$1es');a(/(octop|vir)us$/i,'$1i');a(/(alias|status)$/i,'$1es');a(/(bu)s$/i,'$1ses');a(/(buffal|tomat)o$/i,'$1oes');a(/([ti])um$/i,'$1a');a(/sis$/i,'ses');a(/(?:([^f])fe|([lr])f)$/i,'$1$2ves');a(/(hive)$/i,'$1s');a(/([^aeiouy]|qu)y$/i,'$1ies');a(/(x|ch|ss|sh)$/i,'$1es');a(/(matr|vert|ind)(?:ix|ex)$/i,'$1ices');a(/([m|l])ouse$/i,'$1ice');a(/^(ox)$/i,'$1en');a(/(quiz)$/i,'$1zes');b(/s$/i,'');b(/(n)ews$/i,'$1ews');b(/([ti])a$/i,'$1um');b(/((a)naly|(b)a|(d)iagno|(p)arenthe|(p)rogno|(s)ynop|(t)he)ses$/i,'$1$2sis');b(/(^analy)ses$/i,'$1sis');b(/([^f])ves$/i,'$1fe');b(/(hive)s$/i,'$1');b(/(tive)s$/i,'$1');b(/([lr])ves$/i,'$1f');b(/([^aeiouy]|qu)ies$/i,'$1y');b(/(s)eries$/i,'$1eries');b(/(m)ovies$/i,'$1ovie');b(/(x|ch|ss|sh)es$/i,'$1');b(/([m|l])ice$/i,'$1ouse');b(/(bus)es$/i,'$1');b(/(o)es$/i,'$1');b(/(shoe)s$/i,'$1');b(/(cris|ax|test)es$/i,'$1is');b(/(octop|vir)i$/i,'$1us');b(/(alias|status)es$/i,'$1');b(/^(ox)en/i,'$1');b(/(vert|ind)ices$/i,'$1ex');b(/(matr)ices$/i,'$1ix');b(/(quiz)zes$/i,'$1');b(/(database)s$/i,'$1');c('person','people');c('man','men');c('child','children');c('sex','sexes');c('move','moves');c('cow','kine');Inflector.uncountable('equipment','information','rice','money','species','series','fish','sheep')})(Inflector.plural,Inflector.singular,Inflector.irregular)})();
\ No newline at end of file
diff --git a/spec/classified/stringSpec.js b/spec/classified/stringSpec.js
index 3b98b56..a359bc0 100755
--- a/spec/classified/stringSpec.js
+++ b/spec/classified/stringSpec.js
@@ -160,6 +160,18 @@ describe('String', function() {
       });
     });
     
+    describe('#pluralize', function() {
+      it('pluralizes words', function() {
+        expect('category'.pluralize()).toEqual('categories');
+      });
+    });
+    
+    describe('#singularize', function() {
+      it('singularizes words', function() {
+        expect('people'.singularize()).toEqual('person');
+      });
+    });
+    
     describe('#titleize', function() {
       it('capitalizes each word', function() {
         expect('man from the boondocks'.titleize()).toEqual('Man From The Boondocks');
diff --git a/src/extensions/string.js b/src/extensions/string.js
index 5036023..1fc7c65 100755
--- a/src/extensions/string.js
+++ b/src/extensions/string.js
@@ -79,6 +79,16 @@ classify(String, function() {
     return this.replace(/[-_]+/g, ' ').capitalize();
   });
   
+  // Returns the plural form of the word in the string.
+  def('pluralize', function() {
+    return Inflector.pluralize(this);
+  });
+  
+  // The reverse of `pluralize`, returns the singular form of a word in a string.
+  def('singularize', function() {
+    return Inflector.singularize(this);
+  });
+  
   // Capitalizes all the words and replaces some characters in the string to create a nicer looking title.
   def('titleize', function() {
     return this.underscore().humanize().replace(/\b('?[a-z])/g, function(match, word) {