| gruff voice | 1.05 | He spoke in a gruff voice. | ||
| gruff exterior | 0.26 | Behind his gruff exterior, she finds a sweet soul. | ||
| gruff general | 0.26 | But the gruff former general has never been skilled at masking his feelings. | ||
| gruff manner | 0.26 | My grandfather tried, in his gruff German manner, to calm me. |