25 synonyms for iconic such as celebrated, acclaimed, and august. Iconic is an adjective, and its antonyms are insignificant and unremarkable.
Acclaimed, august, celebrated, distinguished, eminent, esteemed, exalted, famed, famous, glorious, great, honoured, illustrious, leading, legendary, lionized, notable, noted, popular, prominent, remarkable, renowned, respected, and venerated.