say it: AG-uh-nist
agonist is a noun meaning "the principal character in a work of fiction". It carries 4 recorded senses.
the principal character in a work of fiction
someone involved in a contest or battle (as in an agon)
a muscle that contracts while another relaxes
“when bending the elbow the biceps are the agonist”
(biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction
biochemistry
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for agonist come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.