comedown . comedown {n.} Disappointment; embarrassment; failure. It was quite a comedown for Al when the girl he took for granted refused his marriage proposal. Categories: add yours disappointment {n.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: C Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Comment on this entry