adj. 25B6; adjective
an unearthly chill in the air : OTHER-WORLDLY, supernatural, preternatural, alien; ghostly, spectral, phantom, mysterious, spine-chilling, hair-raising; uncanny, eerie, strange, weird, unnatural, bizarre; Scottish eldritch; informal spooky, creepy, scary.
(informal) they rose at some unearthly hour : UNREASONABLE, preposterous, abnormal, extraordinary, absurd, ridiculous, unheard of; informal ungodly, unholy.
normal, reasonable.