Green’s Dictionary of Slang

1. (orig. US) incompetent, inadequate.

1945		in T. Shibutani Derelicts of Company K (1978) 407: I got used to this fuck-up outfit.
1966		R. Stone Hall of Mirrors (1987) 358: I don’t have the fuckupest idea what choke to death on a bunk chain mean.
1968		A. Salkey Late Emancipation of Jerry Stover (1982) 173: If only all black people could stan’ so, what a sweet place this fuck’ up Islan’ would be.
1968		N. Giovanni ‘A Revolutionary Tale’ in King Black Short Story Anthol. (1972) 24: It was just a fucky day. I quit.
1971		T. Thackrey Thief 26: They was just a couple of fuck-up kids I was trying to break in and teach.
1983		C. Knight We Shall Not Die 122: Mi no give a damn ’bout dis fuck-up life.
2000		P. Beatty Tuff 41: He knew for most young fuck-up dads the postpartum conscientiousness lasted a year.
2001		C. Stella Eddie’s World 132: I’m thinking [...] something more sinister than a fuck-up robbery.
2012		R. Milward Kimberly’s Capital Punishment (2023) 149: ‘[W]hy we all fight over fucky prostitute?’.
2012		T. Piccirilli Last Kind Words 65: [A] couple of twenty-year-old fuckup minimum-wage rent-a-cops patrolling the grounds.
2018		G. Disher Kill Shot [ebook] [W]ives, girlfriends and kids visiting their fuckup menfolk.

2. see fucked up adj. (7)