agonist [ ag-uh-nist ]
1. a person engaged in a contest, conflict, struggle, etc., especially the protagonist in a literary work.
2. a person who is torn by inner conflict.
3. Physiology. a contracting muscle whose action is opposed by another muscle. Compare antagonist (def. 3).
4. Pharmacology. a chemical substance capable of activating a receptor to induce a full or partial pharmacological response. Compare antagonist (def. 5).
Origin: 1620–30; < Late Latin agōnista < Greek agōnistḗs contestant, equivalent to agṓnagon + -istēs-ist
EXAMPLE SENTENCES FROM THE WEB FOR AGONIST
Agonist, ag′o-nist, n. one who contends for a prize in public games.
CHAMBERS'S TWENTIETH CENTURY DICTIONARY (PART 1 OF 4: A-D)|VARIOUS
Now YOU come up with a sentence (or fic? or graphic?) that best illustrates the word.