meaning of unearthly
1. Not terrestrial; supernatural; preternatural; hence, weird; appalling; terrific; as, an unearthly sight or sound.
2. suggesting the operation of supernatural influences; "an eldritch screech"; "the three weird sisters"; "stumps. . . had uncanny shapes as of monstrous creatures"- John Galsworthy; "an unearthly light"; "he could hear the unearthly scream of some curlew piercing the din"- Henry Kingsley