negator

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

nĕgātor, ōris, m. [nego],

a denier (postclass.), Tert. adv. Haer. 11; Prud. Cath. 1, 57: Jovis et Minervae, Sid. Ep. 9, 16.