0 (of a person's voice) low and unfriendly, or (of a person's behaviour) unfriendly or showing no patience -- （聲音）低沉而生硬的，粗聲粗氣的；（行為）不友好的，不耐煩的，粗暴的
The gruff vocals are treated with a lot of reverb and brief phrases are spat out rather than sung.
She heard the voices change in response to the shimmering, becoming more melodic, and to the grunge, becoming more gruff, and worked with these tendencies.
For example, when a boy is enacting a toy dinosaur, he uses a deep, gruff voice.
He duly did, creating a language appropriate to these gruff, snarling warrior aliens (see panel).
More than 6 feet tall and muscular, he was cast in the mould of a soldier and conveyed a natural air of command, but he was gruff and domineering.
Rizq was usually gruff and did not mince words.
It took the form of a gruff and laconic telephone call, appropriate for the person issuing the invitation.
I got a very gruff reply, telling me that the son was not eligible for release, because he was not a partner in the firm.
