colloquial Antonyms

abstruse interlocutory learned literary normal pleasing proper quiet standard vulgate all the rage noncolloquial rando supercalifragilistic supercalifragilisticexpialidocious slick-fashioned one of many idiomatical idiomatic adequate affable agreeable allowed amiable approved attentive bookish ceremonial correct elevated eloquent formal genteel gentlemanlike grammatical out of the norm