Green’s Dictionary of Slang

useless, pointless, unpleasant – all deriving from the need to be obsequious.

1969		‘Iceberg Slim’ Mama Black Widow 98: Un dirty lowdown skunk lickin suck ass dog white bitch.
1978		R. Price Ladies’ Man (1985) 69: Suck-ass work.
1987		(con. 1968) Bunch & Cole Reckoning for Kings (1989) 206: What a suckass question.
1990		M. McAlary Crack War (1991) 60: You guys are suckass motherfuckers.
2002		A. Duff Jake’s Long Shadow 73: You get little suck-arse followers like that, who’ll do anything to impress you.
2021		J. Ellroy Widespread Panic 303: Jimmy D. dodn’t kill Janey [...] It was some suck-ass subaltern.