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.
dulled or intentionally blunt.
out of focus; blurry.
To sharpen (an image) by creating a blurred ("unsharp") negative as a mask, and then combining that mask with the original.