Harsh; unrelenting.
Disagreeably precise or penetrating.
Savagely violent, vicious, ruthless, or cruel.
Crude or unfeeling in manner or speech.
Direct and without attempt to disguise unpleasantness.
In extreme metal, to describe the speed of the music and the density of riffs.
Aggressive.
Resembling or characteristic of a frog.
Inclined to fight.