bargainer

the word 'bargainer' is a transparent english formation built upon the verb 'bargain'. the core verb 'bargain' entered middle english from old french 'bargaignier', meaning to haggle, which itself has a germanic origin, likely related to the frankish word 'borganjan', meaning to borrow or lend. the agentive suffix '-er', of old english and proto-germanic descent, is one of the most productive in english, routinely attached to verbs to denote one who performs that action. thus, a 'bargainer' literally and logically means 'one who bargains', directly linking the ancient concept of haggling or negotiating terms to the modern agent noun describing a person engaged in that activity.

Structure: bargain (to negotiate) + er (agent suffix) bargain (from middle english 'bargaynen', meaning to haggle, of germanic origin); er (agentive suffix, from old english '-ere', of germanic origin, denoting a person who performs an action).