adversātrix (archaic advor-), īcis, f. [adversator],
a female antagonist or adversary (in Plaut. and Ter., and then again in Tert.): nunc assentatrix, dudum advorsatrix, Plaut.Most. 1, 3, 100; Ter.Heaut. 1006; Tert. de Anim. 31: quin tu in ea re mihi fueris advorsatrix.