tort·fea·sor /'tȯrt-ˌfē-zər/ n [Anglo-French tortfesor wrongdoer, from tort wrong + fesor faisour doer, maker, from Old French, from fais-, stem of faire to do, make, from Latin facere]: a person who commits a tort, delict, or quasi-offense
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.