Green’s Dictionary of Slang

creep someone out v.

also creep
[SE colloq. the creeps, a sense of unease]

(US) to terrify, to unnerve, to give someone the ’creeps’.

[US]G. Larson Unnatural Selections 93: That guy creeps me out, Zeena.
[Aus]L. Redhead Peepshow [ebook] I met him the other night [...] and he kind of creeped me out.
[US]S. Auslander ‘Somebody Up There Likes You’ in Beware of God (2007) 34: The New York Public library [...] completely creeped him out.
[US]J. Stahl Pain Killers 84: What really creeped me was the globe of muscle in his bicep.
[UK]J.J. Connolly Viva La Madness 238: Jesus creeps them out, they don’t trust him.
[US]J. Stahl Happy Mutant Baby Pills 201: T explained to the (partly intrigued, partly creeped) staff how [etc.].
[UK]Eve. Standard (London) 25 July 11/1: ‘The character is very creepy and she likes to creep people out!’.
[Scot]G. Armstrong Young Team 39: ‘That guy wis creepin me oot, son’.
[US]S. Weinman Scoundrel 273: [S]he experienced a general feeling of being creeped out. [...] She resolved never to be alone with Edgar again.