English dictionary

antagonist

/&/n't/&/g/@/n/I/st/

Definitions, examples, synonyms and antonyms from WordNet 3.0.

adjective

Antagonistic; opposing; counteracting; as, <i>antagonist</i> schools of philosophy.

adjective

Source: webster1913

someone who offers opposition

noun.person

Synonyms adversary opponent opposer resister

Antonyms agonist

Source: WordNet 3.0
a muscle that relaxes while another contracts

noun.body

Examples
When bending the elbow the triceps are the antagonist.

Source: WordNet 3.0
a drug that neutralizes or counteracts the effects of another drug

noun.artifact

Antonyms synergist

Source: WordNet 3.0
One who contends with another, especially in combat; an adversary; an opponent.

noun

Source: webster1913