mad about . mad about {adj. phr.} 1. Angry about. What is Harriet so mad about? 2. Enthusiastic about. Dan is mad about pop music. Categories: add yours music {adj. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 » In RussianTo section: M Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Add my comment