noun, takes する, transitive verb

  1. revealing (information, a secret, etc.), disclosure, telling, letting out.

Variations

Pronunciation Kanji Kana Is Common
口外 こうがい

Contained Kanji Breakdown

mouth
くち コウ ク (1st, N4)
outside
ガイ そと はず.す (2nd, N5)
evening
ゆう セキ ゆ (1st, N4)
divining, fortune-telling, divination or katakana to radical (no. 25)
ボク うらな.う うらない (Kentei Pre-1)