fall away . fall away {v. phr.} To decline; diminish. I was shocked to see how haggard Alan looked; he seems to be falling away to a shadow. Categories: add yours {v. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: F Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Add my comment