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unpleasant; disagreeable; nasty
lewd; lascivious; obscene; filthy; dirty
そんないやらしい言い方はやめてほしい。
I want you to stop talking in that nasty way.
彼の視線がいやらしくて不快に感じた。
His gaze was lewd and made me uncomfortable.
隣の席の人の視線がいやらしかった。
The gaze of the person in the next seat was unpleasant.