short-circuited

The term is a modern compound formed from the adjective "short" and the noun "circuit," with the participial suffix "-ed." A "circuit" originates from the Latin concept of a circular journey, which in electrical engineering was adopted to describe a complete, looping path for current. The adjective "short" modifies this, indicating an abnormally brief, unintended path that bypasses the normal route. Thus, "short-circuited" literally describes an electrical system where the current has taken a shortcut, leading to malfunction. This concrete meaning was later metaphorically extended to describe any process or line of thought that is abruptly interrupted or diverted from its intended course.

Structure: short + circuit + ed - short: From Old English sceort, meaning "not long, brief." In this compound, it functions as an adjective describing the nature of the path. - circuit: From Latin circuitus ("a going around"), from circum ("around") + ire ("to go"). In this compound, it functions as a noun meaning "a complete path for an electrical current." - ed: A suffix from Old English -ed, -od, -ad, used to form the past tense and past participle of verbs, here converting the noun phrase into a participial adjective.