Green’s Dictionary of Slang

prize adj.

[i.e. worthy of a SE prize]

absolute, complete, utter; often as prize package under package n.

[US]Ade Artie (1963) 55: Say, you must think I’m a prize gilly to set around here and give up my insides to you about her.
[Aus]Bulletin (Sydney) 22 Dec. 11/3: Some prize idiot lately wrote to Sydney D. T. advising a sixpenny subscription from every adult in the Australias to purchase an ‘ironclad’.
[US]Ade Knocking the Neighbors 203: He is a prize Bunk, a two-handed Grafter, a Short-Change Artist and a Broadway Wolf.
[US]H.C. Witwer Kid Scanlon 80: The prize boob of the country is waterin’ the pavement around his real estate.
[UK]P. Marks Plastic Age 226: He was known all over the campus as a ‘prize sucker’.
[UK]P. Allingham Cheapjack 211: Lord! you were a prize mug in those days.
[UK]J.G. Brandon Gang War 131: What do you think of that prize rat, Drucci, being closeted here with Schurtz?
[US]J.D. Salinger Catcher in the Rye (1958) 90: I certainly began to feel like a prize horse’s ass, though, sitting there all by myself.
[UK](con. c.1928) D. Holman-Hunt My Grandmothers and I (1987) 160: In my humble opinion your Papa, as you call him, is a prize silly ass!
[UK]C. Dexter Last Bus to Woodstock 184: I said they’re a pair of prize liars.
[UK]S. Berkoff Decadence in Decadence and Other Plays (1985) 11: I never got nothing / a prize nitwit.
[Aus]T. Winton Human Torpedo 94: You’re really a prize wally.
[Aus]J. Byrell Lairs, Urgers & Coat-Tuggers 153: [G]ood ole George Wexford ‘Choko’ McGruder, regarded by most as a prize aleck.

In compounds