'wrench' originates from Middle English, specifically the word 'wrenchen', where the root meant 'to twist or turn violently'.

'wrench' changed from Middle English 'wrenchen' (influenced by Old French forms such as 'wrenchier') and eventually became the modern English word 'wrench' through later Middle English usage.

Initially it meant 'to twist or turn violently', but over time it evolved to include the sense 'to pull or jerk with sudden force' and figuratively 'to cause intense emotional pain'.