JMdict: 1872200

口を割る 【くちをわる】

  1. [exp,v5r] to confess; to speak out; to disclose; to tell
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
Mouth コウ, ク くち 1
Proportion, Comparatively, Divide, Cut, Separate, Split カツ わ.る, わり, わ.り, わ.れる, さ.く 6