The antonyms for the word "in urbane" can be "rude," "uncivilized," "crude," "vulgar," "uncouth," "boorish," "gauche," and "rustic." While the term "in urbane" refers to being sophisticated, polished, and cultured, its opposites connote the opposite. They refer to a lack of refinement in behavior or manners, a failure to adapt to social settings, and an absence of tact and politeness. While "in urbane" is an admired trait in society, its antonyms suggest a lack of social intelligence or exposure. It is crucial to be mindful of one's words and actions, as they can either elevate or diminish one's reputation in society.