Example : An eldritch screech.
The three weird sisters.
Stumps...had uncanny shapes as of monstrous creatures.
An unearthly light.
He could hear the unearthly scream of some curlew piercing the din.

Synonyms : eldritch, unearthly, weird

Example : Beyond his preternatural affability there is some acid and some steel.
His uncanny sense of direction.

Synonyms : preternatural