Green’s Dictionary of Slang

1. a fool, a complete idiot; the use of fuck merely intensifies the disdain by its own taboo status; esp. as a term of address.

1946		L. Bergman I cannot see their faces and keep silent 34: Get over there, you dumb bastard, Keep in step, you fuckhead, Hold that rifle up, you turd.
1967		L. Bruce Essential Lenny Bruce 97: A shitkickuh, a dumb fuckhead.
1973		Tharunka (Sydney) 8 Nov. 27/2: ‘All right, mother, just this once... what’s the fine, brainless?’ ‘Fine, sir?’ ‘Fee, damage, plunder, profit, cost, FUCKHEAD, COST’.
1977		(con. 1949) J.G. Dunne True Confessions (1979) 91: Serve that fuckhead right.
1984		Tracks (Sydney) Oct. 5 n.p.: I’d finally like to wrap it up by saying that this dickwitted fuckhead has obviously, in my opinion, been brainwashed by all the American propaganda bullshit he sees on TV.
1987		T. Wolfe Bonfire of the Vanities 41: Yo! Fuckhead!
1987		(con. 1967) E. Spencer Welcome to Vietnam (1989) 113: It is obviously distressing to those two fuckheads to have to eat next to someone dressed the way I am.
1993		A. Rodriguez Spidertown (1994) 73: The cop beside him smacked him on the arm. ‘You fuckhead. Moron.’.
1999		Guardian Editor 11 June 11: Jackie Collin’s favourite word is ‘fuckhead’.
2005		J. Pluss Jumping Fences 52: You look at me like that again and I’ll move your scrotum to where your face is, fuckhead.
2006		‘Python Bonkers’ A Million Little Pieces of Feces 80: [...] ungodly, unholy, unprincipled, unrighteous, wicked, pagan . . . fuckhead!
2009		P. Temple Truth 75: You’re not dealing with crminal masterminds here [...] You’re dealing with fuckheads.
2012		M. McBride Frank Sinatra in a Blender [ebook] Yep [...] That’s what that fuckhead called him.
2018		‘Aidan Truhen’ Price You Pay 159: [H]is anger kinda resonates with the same kind of particular miserable underpaid fuckhead.
2020		C. Hiaasen Squeeze Me 69: The unreliable fuckhead couldn’t be trusted to keep quiet.
2023		A. Nette Orphan Road 132: ‘What are you waiting for, fuckhead? [...] Get it over with’.

2. in attrib. use of sense 1.

1996		Picture (Sydney) 4 Dec. 59/1: Recently I celebrated my 18th birthday in the watchhouse because my fuckhead brother got bust by the cops for a pipe in his car, which was his.
2011		J.J. DeCeglie Drawing Dead [ebook] I blew a hundred [...] betting random horses on a jag-off run of epic fuckhead proportions.
2012		L. Berney Whiplash River [ebook] Did those fuckhead Americans think they were going to pull this off?
2023		(con. 1962) J. Ellroy Enchanters 181: ‘[H]er puerile fixation on fuckhead criminals’.