Agonist is a noun with a few distinctclearly different from one another; not the same meanings. It can refer to the main character in a story, a muscle that does the work in a movement, a drug that activatesmakes something start working or become active a receptor, or a participant in a contest or struggle. The exact meaning depends on the contextthe surrounding words or situation that show intended meaning.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-11-03. AI assessment; not a guarantee of accuracy.
Pronunciation
AI-generated pronunciation audio (OpenAI).
Accent: General American English
IPA: /ˈæɡənɪst/
Easy pronunciation: AG-uh-nist (approximate spelling).
Stress: Stress the first syllable.
Use this pronunciation for the noun meaning the principal character in a work of fiction.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-11-03. AI assessment; not a guarantee of accuracy.
Agonist Meaning
the main character in a story, play, or movie
Part of speech: noun
Definition: the principal character in a work of fiction
Example: In the novel, the agonist drives the entire plot.
Synonyms for this meaning:
- protagonist — This is the standard synonym for the main character in a story.
Reviewed with OpenAI Decisions. Assessment: inaccurate — correction needed. Checked: 2026-11-03. AI assessment; not a guarantee of accuracy.
Other Meanings of Agonist
Meaning 2
the muscle that does the main pulling in a movement
Part of speech: noun
Definition: a muscle that contracts while another relaxes
Example: When you bend your elbow, the biceps act as the agonist.
Meaning 3
a substance that activates a receptor in the body
Part of speech: noun
Definition: (biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction
Example: The medication works as an agonist at that receptor.
Meaning 4
a person taking part in a contest, struggle, or battle
Part of speech: noun
Definition: someone involved in a contest or battle (as in an agon)
Example: The two agonists faced each other in the arena.
Reviewed with OpenAI Decisions. Assessment: inaccurate — correction needed. Checked: 2026-11-03. AI assessment; not a guarantee of accuracy.
Agonist Synonyms
Similar Meaning
- protagonist
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-11-03. AI assessment; not a guarantee of accuracy.
Common Mistakes
- People sometimes confuse agonist with antagonist, but they are opposites in biology and in story roles.
- In biology, agonist does not mean a muscle that relaxes; it means the muscle doing the contracting or the main activating drug.
Reviewed with OpenAI Decisions. Assessment: uncertain — manual review needed. Checked: 2026-11-03. AI assessment; not a guarantee of accuracy.
Frequently Asked Questions
What does agonist mean?
Agonist can mean the main character in a story, a muscle that contracts during a movement, a drug that activates a receptor, or a person taking part in a contest or struggle.
What is the synonym of agonist?
For the story-related meaning, the main synonym is protagonist. The other senses do not have a single common everyday synonym.
Is agonist the same as antagonist?
No. Antagonist is usually the opposite of agonist, especially in biology and in discussions of characters or conflict.
Reviewed with OpenAI Decisions. Assessment: uncertain — manual review needed. Checked: 2026-11-03. AI assessment; not a guarantee of accuracy.
