unholy

adjective, un·ho·li·er, un·ho·li·est.

1. not holy; not sacred or hallowed.
2. impious; sinful; wicked.
3. Informal. dreadful; ungodly: They got us out of bed at the unholy hour of three in the morning.

adjective -lier or -liest

1. not holy or sacred
2. immoral or depraved
3. informal outrageous or unnaturalan unholy alliance

adj.Old English unhalig, “impious, profane, wicked,” from un- (1) “not” + halig (see holy). Cf. Middle Dutch onheilich, Old Norse uheilagr, Danish unhellig, Swedish ohelig. In reference to actions, it is attested from late 14c. Colloquial sense of “awful, dreadful” is recorded from 1842.