адски

Etymology
From.

Adjective

 * 1) hellish, infernal pertaining to hell
 * 2)  wicked, evil
 * 3)  hellish very painful or uncomfortable
 * 1)  hellish very painful or uncomfortable

Adverb

 * 1) insanely, greatly, immensely, hugely, super

Adverb

 * 1) hellishly in a hellish manner