訳の分からない
Meanings
1
expression, noun-modifying (irregular)
incomprehensible; nonsensical; puzzling
Used prenominally to describe something that makes no sense, is illogical, or cannot be understood. Often carries a nuance of frustration or dismissal.
See also: 訳が分からない
He started saying incomprehensible things.
I was turned down for some puzzling reason.