agonist
1 antonym for agonist — opposites grouped by meaning.
Noun — A person taking part in a struggle or contest, such as the main character in a story.
Antonyms
Etymology
Borrowed from Latin agōnista, from Ancient Greek ἀγωνιστής (agōnistḗs, “combatant, champion”). By surface analysis, agon or agony + -ist.
Full origin of agonist →