The word "supermodern" refers to something that is extremely contemporary and advanced. Its antonyms, on the other hand, pertain to a more traditional and outdated context. Some of the antonyms for supermodern are archaic, old-fashioned, obsolete, ancient, and outdated. These words suggest that something has lost its relevance and practicality in the present time. Additionally, other antonyms like vintage, retro, classical, and historic imply that something has an antique or nostalgic value. Though supermodern implies something that is cutting-edge, its polar opposites are necessary to describe objects, buildings, and ideas that have historical worth or have endured through time.