語かたるに落おちる

expression, ichidan verb

let slip a secret; let the cat out of the bag

Idiomatic expression meaning to inadvertently reveal a secret while talking. Abbreviation of the longer proverb 問うに落ちず語るに落ちる (one doesn't fall when asked, but falls when speaking).

See also: 問うに落ちず語るに落ちる

• 彼かれはつい語かたるに落おちて、サプライズパーティーのことを話はなしてしまった。

  He inadvertently let the cat out of the bag and told them about the surprise party.

• 語かたるに落おちたと気きづいたときには、もう遅おそかった。

  By the time I realized I had let the secret slip, it was too late.