simple past tense and past participle of screw up

(of a piece of paper) Having been screwed into a ball. / (idiomatic, vulgar) Morally reprehensible; clearly and grossly objectionable.

A regular shoe with screws (1/4 to 3/8 inch) screwed into the bottom to give it grip while running on ice and snow.

Used other than figuratively or idiomatically: see screw, you.

(slang, idiomatic, mildly vulgar) less offensive version of fuck you.

An act of defiance and contempt.

A type of screw having a square recess in the head.

plural of screw thread

(engineering) A helical ridge formed around a cylinder, or a helical groove formed around the inner wall of a bore, used mostly on fasteners and their connection points.

(sports, billiards, snooker, pool) To cue the cue ball in such a way as to impart backspin. On impact, the ball will follow a reverse trajectory according to the spin.