agonist

Noun agonist has 4 senses

• agonist(n = noun.person) protagonist - the principal character in a work of fiction;
is a kind of character, fictional character, fictitious character
has particulars: antihero
Derived form noun agony₁

• agonist(n = noun.person) - someone involved in a contest or battle (as in an agon);
is a kind of contestant
Derived forms adjective agonistic₁, noun agony₁, noun agony₂
Antonym: antagonist

• agonist(n = noun.body) - a muscle that contracts while another relaxes; "when bending the elbow the biceps are the agonist"
is a kind of antagonistic muscle

• agonist(n = noun.artifact) - (biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction;
is a kind of drug