gewgaw UK /ˈɡjuːɡɔː/US /ˈɡ(j)uɡɔ/adjective 1noun 1forms 1 adjective1 •Showy; unreal; pretentious.Seeing his gewgaw castle shine, New as his title, built last year. — 1855 noun1 •A showy trifle, a toy; a showy trinket, ornament or decoration.A heavy gewgaw called a crown. — 1693 formsgewgaws