hellish, infernal
awful, terrible, dreadful, horrendous
hellish, infernal, awful, terrible, horrendous, godawful (slang), insane (slang)
Э́то бы́ло устраша́юще.
It was horrendous.
Э́то был ужа́сный о́пыт.
It was a horrendous experience.
Запа́х был ужа́сным.
The smell was horrendous.
Мы попали в адовую пробку на дороге.
We got stuck in a horrendous traffic jam.
На дорогах с утра аццкие пробки.
There have been horrendous traffic jams on the roads since this morning.
