graded adjective & adjective If you say that someone's behaviour is unseemly, you disapprove of it because it is not polite or not suitable for a particular situation or occasion. [literary, disapproval] [+ for] ⇒ It would be unseemly for judges to receive pay increases when others are having to tighten their belts. ⇒ ...unseemly drinking, brawling and gambling.
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