public static function isPlural( $word, $returnSingular = false )
    {
        if ( empty( $word ) || !is_string( $word ) || strlen( $word ) < 3 )
        {
            return false;
        }

        $_temp = $word[strlen( $word ) - 1];

        if ( 's' == $_temp && $word == static::pluralize( substr( $word, 0, -1 ) ) )
        {
            if ( false !== $returnSingular )
            {
                return substr( $word, 0, -1 );
            }

            return true;
        }

        return false;
    }