Crude or unfeeling in manner or speech.
Disagreeably precise or penetrating.
Savagely violent, vicious, ruthless, or cruel.
Harsh; unrelenting.
Direct and without attempt to disguise unpleasantness.
In extreme metal, to describe the speed of the music and the density of riffs.
Wearing a particularly stern and disapproving expression; humourless; priggish.
Poker-faced.