jar on . jar on {v. phr.} To irritate. The constant construction noise was beginning to jar on the nerves of the members of the meeting. Categories: add yours add yours {v. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2025 To section: J Subscribe to: American Idioms► Also consider the parent subscriptions (3)Idioms feedEnglish languageHome page and general feed Discuss Discuss