Definition of "prevert"

[…] so Joe come to me and he uz sore as a boil and said you goddam prevert, I don't want no twenny-two-year-old mechanic who still pulls his pood in the toilet, and farred me.

1962, Thomas Berger, Reinhart in Love

I think you're some kind of deviated prevert. And I think General Ripper found out about your preversion, and that you were organizing some kind of mutiny of preverts. Now move!

1964, Stanley Kubrick, Terry Southern, Peter George, directed by Stanley Kubrick, Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb, spoken by Colonel "Bat" Guano (Keenan Wynn)

Lenny Bruce? Didn't you room with that prevert? They kept saying pre-vert and how these preverts were poisoning America with the language they were using.

1998, Jack Engelhard, The Days of the Bitter End, 3rd edition, British Columbia, Canada: DayRay Literary Press, published 2013, page 129

Turk exasperatedly shook his head. "Close that lid. You don't want that lady thinkin' you're a prevert." […] Floyd bit his lip. He wanted to pronounce pervert for them, but he kept his eyes straight ahead.

2018, Conn Hamlett, John Lee Johnson: Into the Pits of Hell – Lambert Goes Home, Bloomington, Indiana: Abbott Press