eldritch, weird, uncanny, unearthly -- (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)
preternatural, uncanny -- (surpassing the ordinary or normal; "Beyond his preternatural affability there is some acid and some steel" - George Will; "his uncanny sense of direction")