UNEARTHLY
eldritch, weird, uncanny, unearthly
(adjective) 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
spiritual, unearthly
(adjective) concerned with or affecting the spirit or soul; “a spiritual approach to life”; “spiritual fulfillment”; “spiritual values”; “unearthly love”
Source: WordNet® 3.1
Etymology
Adjective
unearthly (comparative unearthlier, )
Not of the earth; non-terrestrial.
Preternatural or supernatural.
Strange, enigmatic, or mysterious.
Ideal beyond the mundane.
Ridiculous, ludicrous, or outrageous.
Source: Wiktionary
Un*earth"ly, a.
Definition: Not terrestrial; supernatural; preternatural; hence, weird;
appalling; terrific; as, an unearthly sight or sound.
– Un*earth"li*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition