1530s, of physical things, "coarse, coarse-grained," from Middle Dutch or Middle Low German grof "coarse (in quality), thick, large," of uncertain origin, regarded by some as related to Old English hreof, Old Norse hrjufr "rough, scabby," with Germanic completive prefix ga-. Of manners, "rough, surly," by 1690s. Related: Gruffness.
权威例句
1. His gruff exterior concealed one of the kindest hearts.
他粗暴的外表下藏着一颗非常善良的心。
2. He picked up the phone expecting to hear the chairman's gruff voice.
他拿起电话,心想会听到主席粗哑的嗓音。
3. He could be gruff and monosyllabic.
他说话噎人,且话不多。
4. Beneath his gruff exterior, he's really very kind-hearted.