over with . over with(1) {prep.} At the end of; finished with; through with. They were over with the meeting by ten o'clock. By Saturday Mary will be over with the measles. Categories: add yours {prep.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: O Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Leave my opinion