screwed-up

The adjective 'screwed-up' is a modern informal formation derived from the phrasal verb 'to screw up', meaning to twist tightly, to botch, or to ruin. The core metaphor hinges on the verb 'screw', which evolved from a mechanical fastener to imply forceful twisting or application of pressure. When combined with the particle 'up', which denotes completion or a resulting state, the literal sense of being "twisted tight" transformed into the figurative meanings of being ruined, malfunctioning, or psychologically twisted. This evolution reflects a common pattern in English where physical action verbs acquire abstract, often negative, psychological or situational connotations.

Structure: screw (to fasten/twist) + up (completive/intensifying particle) - screw: From Middle English screwe, likely from Old French escroue (nut, cylindrical socket), of uncertain origin, possibly from a Germanic source. In this compound, it carries the metaphorical sense of twisting, forcing, or applying pressure. - up: From Old English ūp (upward), of Germanic origin. In phrasal verb/adjective formations, it often functions as a completive or intensifying particle, indicating a final, often negative, state.