Green’s Dictionary of Slang

1. (Aus./US) a pervert.

1975		H. Ellison ‘Neon’ in Deathbird Stories (1978) 91: Get offa there, you freako-pervo-devo!
1981		J. Sullivan ‘Go West Young Man’ Only Fools and Horses [TV script] You’re a pervo Rodney. That is immoral, you know that, don’t you?
2003		C. Bronson Silent Scream 1: I gave him a bunch of fives in return and knocked him clean out, he deserved it for being a pervo.
2010		C. Hiaasen Star Island (2011) 48: The drummer abstained, insisting he had to see [her breasts] in the flesh [...] ‘Pervo,’ Cherry muttered.
2013		T. Robinson Hard Bounce [ebook] ‘[S]he met some kind of pervo online’.

2. attrib. use of sense 1.

1986		C. Stroud Close Pursuit (1988) 109: He knew he had tourist pervo wimp tattoed on his forehead.
2000		Observer Escape 12 Mar. 2: Yeah, I bet you are, you limey pervo loser.
2004		J. Ellroy ‘Hollywood Fuck Pad’ in Destination: Morgue! (2004) 229: The same big pervo guy is chasing me through the house.