antagonista
From LSJ
Latin > English (Lewis & Short)
antăgōnista: ae, m., = ἀνταγωνιστής,
I an adversary, opponent, antagonist, Hier. Vit. Hil. fin.
Latin > French (Gaffiot 2016)
antăgōnista, æ, m. (ἀνταγωνιστής), antagoniste : Hier. Vita Hilar. 43.