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uncool; lame; unfashionable; unstylish; tacky; tasteless; ugly; corny; pathetic (behaviour); sad
その服のデザインはださいね。
That outfit's design is lame.
去年買ったあの服は今見るとださかった。
That outfit I bought last year looks lame looking at it now.
シンプルなデザインは別にださくない。
A simple design is not necessarily uncool.