口が裂けても言えない

くちがさけてもいえない

Meanings

1. Expression, い-adjective (I) won't say anything no matter what; unwilling to tell even under threat

Kanji

• 口 mouth. Read as くち.
• 裂 rip. Read as さける.
• 言 say. Read as いう.

Jinuma: Japanese Dictionary · Word lists