Pluralize words javascript

gistfile1.js

// Original source http://lummie.co.uk/javascript-%E2%80%93-rails-like-pluralize-function/

var pluralize = (function() {
    var Inflector = {
        Inflections: {
            plural: [
                [/(quiz)$/i,               "$1zes"  ],
                [/^(ox)$/i,                "$1en"   ],
                [/([m|l])ouse$/i,          "$1ice"  ],
                [/(matr|vert|ind)ix|ex$/i, "$1ices" ],
                [/(x|ch|ss|sh)$/i,         "$1es"   ],
                [/([^aeiouy]|qu)y$/i,      "$1ies"  ],
                [/(hive)$/i,               "$1s"    ],
                [/(?:([^f])fe|([lr])f)$/i, "$1$2ves"],
                [/sis$/i,                  "ses"    ],
                [/([ti])um$/i,             "$1a"    ],
                [/(buffal|tomat)o$/i,      "$1oes"  ],
                [/(bu)s$/i,                "$1ses"  ],
                [/(alias|status)$/i,       "$1es"   ],
                [/(octop|vir)us$/i,        "$1i"    ],
                [/(ax|test)is$/i,          "$1es"   ],
                [/s$/i,                    "s"      ],
                [/$/,                      "s"      ]
            ],

            irregular: [
                ['move',   'moves'   ],
                ['sex',    'sexes'   ],
                ['child',  'children'],
                ['man',    'men'     ],
                ['person', 'people'  ]
            ],

            uncountable: [
                "sheep",
                "fish",
                "series",
                "species",
                "money",
                "rice",
                "information",
                "equipment"
            ]
        },

        pluralize: function(word) {
            for (var i = 0; i < Inflector.Inflections.uncountable.length; i++) {
                var uncountable = Inflector.Inflections.uncountable[i];
                if (word.toLowerCase() == uncountable) {
                    return uncountable;
                }
            }
            for (var i = 0; i < Inflector.Inflections.irregular.length; i++) {
                var singular = Inflector.Inflections.irregular[i][0];
                var plural   = Inflector.Inflections.irregular[i][1];
                if ((word.toLowerCase() == singular) || (word == plural)) {
                    return plural;
                }
            }
            for (var i = 0; i < Inflector.Inflections.plural.length; i++) {
                var regex          = Inflector.Inflections.plural[i][0];
                var replace_string = Inflector.Inflections.plural[i][1];
                if (regex.test(word)) {
                    return word.replace(regex, replace_string);
                }
            }
        }
    }

    return function(word) {
        return Inflector.pluralize(word);
    }
})(),