gruff/grʌf; ɡrʌf/ adj(of a person, his voice or behaviour) rough; surly （指人、 其声音或行为）粗野的, 粗暴的 Beneath his gruff exterior he's really very kind-hearted. 他外表粗鲁, 心地却十分善良.
牛津英汉双解词典