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Definitions from the Web

Antagonist

Part of speech: noun

Sense: a person who actively opposes or is hostile to someone or something

Usage: In literature, an antagonist refers to a character or force that acts as the main source of conflict for the protagonist.

Example sentence: The antagonist in the novel was a cunning and manipulative villain who constantly plotted against the hero.

Sense: a chemical substance that interferes with the physiological action of another substance

Usage: In pharmacology, an antagonist is a type of drug that blocks or reduces the effects of a specific neurotransmitter or hormone.

Example sentence: The doctor prescribed an antagonist to counteract the negative side effects of the patient's medication.

Sense: a muscle that acts in opposition to another

Usage: In anatomy, an antagonist muscle is a muscle that opposes or reverses the action of another muscle.

Example sentence: The biceps and triceps muscles are antagonists, with the biceps flexing the arm and the triceps extending it.

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