all in . all in {adj. phr.}, {informal} Very tired; exhausted. The players were all in after their first afternoon of practice. Syn.: PLAYED OUT, WORN OUT. Categories: add yours add yours {adj. phr.} {informal} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2025 » In RussianTo section: A Subscribe to: American Idioms► Also consider the parent subscriptions (3)Idioms feedEnglish languageHome page and general feed Post my comment Post my comment