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bitter (e.g. criticism); sharp; biting; severe; scathing; harsh
辛辣な批評に作者は傷ついた。
The author was hurt by the scathing criticism.
辛辣な意見も時には必要だ。
Sometimes harsh opinions are necessary.
彼女は辛辣な皮肉を言うことがある。
She sometimes makes biting sarcastic remarks.