screw off verb 3exclamation 1screw-off adjective 1screw-off noun 1forms 4 verb3 •To remove the lid of a jar or other container by unscrewing it.Hold it in two hands and screw off the lid. Set the lid down. Inside are pickled onions. — 2004 •(informal) To fail to do one's work; to goof off.When the boss wasn't around on the weekend they would sometimes screw off. •(informal) To leave; to bugger off.I finished the work early so I screwed off. exclamation1 •(vulgar) An expression of surprise or disbelief."We just won a new car!" "Screw off! You're joking, right?" screw-off adjective1 •Able to be removed by unscrewing.These were easy wines for everyday life, with screw-off caps so that you could pour two glasses and then close up the bottle for the next day. — 2009 screw-off noun1 •(US, slang) Someone who often fails to do his or her work; someone known to goof off.You know, when a guy is a screw-off you got to discipline him. — 1997 formsscrewed off · screwing off · screws off · screw-offs