The Collaborative International Dictionary of English v.0.48:

Creepy \Creep"y\ (kr[=e]p"[y^]), a.
   Crawly; having or producing a sensation like that caused by
   insects creeping on the skin. [Colloq.]
   [1913 Webster]

         One's whole blood grew curdling and creepy. --R.
                                                  Browning.
   [1913 Webster]

WordNet (r) 3.0 (2006):

creepy
    adj 1: annoying and unpleasant; "some creepy kids were bothering
           her"
    2: causing a sensation as of things crawling on your skin; "a
       creepy story"; "I had a creepy-crawly feeling" [syn:
       creepy, creepy-crawly]

Moby Thesaurus II by Grady Ward, 1.0:

26 Moby Thesaurus words for "creepy":
   barfy, bum, cheesy, crappy, crawly, crummy, dirty, eerie,
   formicative, godawful, goshawful, grim, hairy, icky, punk, putrid,
   shitty, spooky, stinking, stinky, uncanny, unco, uncolike, vomity,
   weird, yecchy