Rude, impolite, or contrary to accepted standards of polite behavior and courtesy.
From anti- (against) + civil (from Latin 'civilis' meaning of citizens, polite). The word combines the Latin root with the modern English sense of 'civil' meaning courteous and well-mannered.
The word 'civil' comes from the same root as 'civilization'—so being 'anticivil' literally means acting against civilization itself, which is why rudeness has always been seen as a threat to social order.
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