cockeyed

the term "cockeyed" emerged in early 19th century american english as a vivid colloquialism. its first element, "cock," draws on an old sense meaning "to turn up" or "to tilt," as seen in phrases like "cock one's head" or "cock a hat." this sense likely derives from the assertive, angled posture of a rooster's head or comb. combined with "eyed," it originally described a squinting or askew glance, literally having eyes that were not aligned. through figurative extension, this concrete image of physical misalignment was applied to abstract concepts, giving rise to the modern meanings describing something that is crooked or, more commonly, something that is utterly ridiculous or senseless.

the word is a compound formed from the english word "cock" (meaning a male bird, especially a rooster, but also used to denote something turned up or tilted) and the word "eyed" (having eyes of a specified kind). it functions as a single lexical unit.