grandstander . grandstander {n.}, {slang}, {informal} A showoff, a person who likes to engage in histrionics. Many people think that Evel Knievel is a grandstander. Categories: add yours {informal} {n.} {slang} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2025 To section: G Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Add my comment