affirmator

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

affirmātor (adf-), ōris, m. [affirmo],

one who asserts or affirms a thing (only in late Lat.), Dig. 27, 7, 4; Tert. adv. Marc. 4, 7; Min. Fel. Oct. 31.