Superlative form of creepy: most creepy.(adjective)
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Use "creepiest" in a sentence
"After a whole season of dealing with what can only be described as the creepiest baby on Earth, True Blood's Todd Lowe is really looking forward to acting with the adults again — which he gets to do in this Sunday's episode when Terry finally confronts his cousin Andy Chris Bauer about his V addiction."
"The creepiest is a former state senator nicknamed the Shyster, who talks about his pedophilia with unnerving sangfroid."
"The one I found the creepiest was the episode where the crew are being kidnapped from their beds as they sleep right into subspace."