jim-dandy . jim-dandy {n.}, {slang} Something wonderful; something very good. Tommy's new boat is really a jim-dandy! I wish I had one like it. Categories: add yours {n.} {slang} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 » In RussianTo section: J Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Comment on this entry