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rustic; rude; vulgar; rough
粗野な振る舞いは周囲に不快感を与える。
Rude behavior makes those around you feel uncomfortable.
見た目は粗野だが心の優しい人物だった。
He looked rough but was a kindhearted person.
粗野な言葉遣いを改めるよう注意された。
He was told to correct his vulgar language.