antagonist
/ænˈtæɡənɪst/ noun
Forms antagonists
- noun An opponent or enemy.
- noun One who antagonizes or stirs.
- noun (biochemistry) A chemical that binds to a receptor but does not produce a physiological response, blocking the action of other agonist chemicals, such as endogenous chemical messengers.
- noun (authorship) The main character or force opposing the protagonist in a literary work or drama.
- noun (anatomy) A muscle that acts in opposition to another. “A flexor, which bends a part, is the antagonist of an extensor, which extends it.”
Synonyms
Antonyms
Etymology
From Latin antagonista, from Ancient Greek ἀνταγωνιστής (antagōnistḗs, “opponent”) (ἀντί (antí, “against”) + ἀγωνιστής (agōnistḗs, “a combatant, pleader, actor”)), from ἀνταγωνίζομαι (antagōnízomai, “to antagonize”).
Webster’s 1913
- noun One who contends with another, especially in combat; an adversary; an opponent.
- noun A muscle which acts in opposition to another; as a flexor, which bends a part, is the antagonist of an extensor, which extends it.
- adjective Antagonistic; opposing; counteracting; as, antagonist schools of philosophy.
Etymology [L. antagonista, Gr. antagoniste. See Antagonism.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “antagonist”, CC BY-SA 4.0. Details