fight-or-flight

The compound adjective "fight-or-flight" is a modern physiological and psychological term constructed from three native English words to describe a primal binary response. "Fight," from Old English feohtan, and "flight," from Old English flyht, represent the two diametrically opposed survival strategies of confronting a threat or escaping from it. The conjunction "or" explicitly frames these not as a sequence but as an exclusive, instinctive choice made by the organism. This concise, hyphenated formulation, coined in the early 20th century, elegantly encapsulates a complex autonomic nervous system reaction into a universally understandable metaphor of immediate action.

Structure: fight (combat) + or (alternative) + flight (escape) - fight: From Old English feohtan (to fight, combat). A Germanic root. Functional role: The first of two possible instinctive responses. - or: From Old English oþþe (or). A conjunction indicating an alternative or choice between two options. - flight: From Old English flyht (act of flying, escape). A Germanic root. Functional role: The second possible instinctive response.