The Oxford Thesaurus An A-Z Dictionary of Synonyms - unearthly adj.

1) supernatural, unnatural, preternatural, unworldly, other-worldly, psychic(al) , extramundane, extraterrestrial, extrasensory, supersensory, out-of-(the) -body, asomatous, incorporeal, sublime, celestial, astral: They speculated about what unearthly experiences space travel might lead to. 2) weird, bizarre, macabre, nightmarish, uncanny, eerie, strange, ghostly, spectral, unreal, Literary eldritch, Colloq spooky, creepy: An unearthly creature appeared in a mist before her. 3) strange, odd, peculiar, unusual, abnormal, absurd, out of the ordinary, extraordinary, outrageous; unheard-of, unreasonable, Colloq ungodly: The baby wakes up at the unearthly hour of three o'clock every morning.