denier

The word 'denier' originates from the Old French verb 'denoier', meaning "to deny," which itself derives from the Latin 'denegare' (to deny, refuse, say no). The Latin term is a compound of 'de-' (completely) and 'negare' (to say no, refuse). The agent suffix '-er' was added in Middle English, following a common Germanic pattern, to create a noun for "one who denies." The term's second, seemingly unrelated meaning as a unit of yarn weight has a distinct origin, coming from the Old French 'denier', a small coin and unit of weight, which in turn came from the Latin 'denarius', a Roman silver coin. The semantic link for the textile term lies in the historical practice of weighing a standard length of silk against the weight of a denarius coin.

Structure: deni (deny) + er (agent suffix) - deni: From the verb 'deny', of Old French origin, meaning "to declare untrue, refuse to accept." - er: An agentive suffix of Old English origin, used to form nouns indicating a person or thing that performs the action of the verb.