leak out leak out {v. phr.} To become known; escape. The famous beauty queen tried to keep her marriage a secret, but news of it soon leaked out. Categories: add yours {v. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: L Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Leave my opinion