As "carnivalesque" describes a festive and eventful atmosphere, its antonyms are words that connote solemnity, restraint, and sobriety. Words such as solemn, serious or austere are antonyms for "carnivalesque." These words indicate a lack of frivolity and enjoyment often found in carnivals and other such events. Similarly, words like dull, lifeless, and unexciting can be considered antonyms for "carnivalesque." These words describe an absence of entertainment and liveliness, which are precisely the opposite of what carnivals offer. Thus, depending on the context, one can choose an appropriate antonym to portray an entirely different atmosphere.