prōtestātĭo

ōnis, f.

protestor

I. a declaration, protestation (post-class.): amoris, Symm. Ep. 1, 56: veritatis suae, Hilar. Trin. 1, 27; Vulg. 2 Macc. 7, 6.
Lewis & Short
A Latin Dictionary, 1879
An open-access project