weird vs unearthly

weird and unearthly both are adjectives.

Word	Noun	Adjective	Verb	Adverb
weird	No	Yes	No	No
unearthly	No	Yes	No	No

As adjectives, weird and unearthly are synonyms defined as:

weird and unearthly: suggesting the operation of supernatural influences

Other synonyms of weird include eldritch, uncanny.

weird (adjective)	unearthly (adjective)
strikingly odd or unusual	suggesting the operation of supernatural influences
suggesting the operation of supernatural influences	concerned with or affecting the spirit or soul