make-believe make-believe {n.} False; untrue; created by illusion. The creatures of Star Wars are all make-believe. Categories: add yours {n.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: M Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Comment on this entry