天てん機きを漏もらす

expression, godan verb (-su)

leak a major secret; divulge a heavenly secret

Literary or formal expression meaning to reveal a secret of great importance, often with a nuance of betraying a trust or disclosing something that should remain hidden. The phrase 天機 (heaven's secret) suggests a secret of cosmic or fateful significance.

• 彼かれはうっかり天てん機きを漏もらしてしまった。

  He carelessly leaked a major secret.

• 天てん機きを漏もらすようなことは決けっしてしないでください。

  Please never do anything that would divulge a heavenly secret.