訳が分からない

わけがわからない

Also written 訳がわからない

Meanings

1. Expression, い-adjective incomprehensible; nonsensical; puzzling; mysterious; meaningless
2. Expression I don't get it; I'm confused; I'm lost

Kanji

• 訳 reason. Read as わけ.
• 分 understand. Read as わかる.

Jinuma: Japanese Dictionary · Word lists