the powers that be . the powers that be {n. phr.} Constituted authority; those in power. I have done all I can; the rest is up to the powers that be. Categories: add yours {n. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2025 To section: T Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Leave my opinion