the devil to pay . the devil to pay {n. phr.} A severe penalty. If we don't finish the work by next Monday, there will be the devil to pay. Categories: add yours {n. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: T Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Add my comment