Synonyms of unearthly in English:

unearthly


See US English definition of unearthly

See UK English definition of unearthly

See Spanish definition of sobrenatural

adjective

1‘there was an unearthly chill in that ghastly chamber’

SYNONYMS
other-worldly, not of this world, supernatural, preternatural, extraterrestrial, alien
ghostly, spectral, phantom, mysterious, haunted, chilling, spine-chilling, hair-raising, blood-curdling
uncanny, eerie, macabre, strange, weird, unnatural, bizarre
Scottish eldritch
informal spooky, creepy, scary
rare phantasmal, phantasmic
ANTONYMS

normal, mundane

2‘they rise at some unearthly hour for the long drive’

SYNONYMS
unreasonable, preposterous, abnormal, extraordinary, absurd, ridiculous, horrendous, outrageous, unheard of, out of the ordinary
informal ungodly, unholy, godawful
ANTONYMS

reasonable