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Definition of intervener

intervener

/ˌɪntərˈviːnər/
in · ter · ven · er
Plural:interveners
•
Adjective:intervening
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intervener Lexical Profile

intervener Game Scores & Validity

• noun

1

A person, organization, or nation that steps into a situation, dispute, or conflict in order to alter its course or mediate between opposing sides.

Example

"The international organization acted as a neutral intervener to help negotiate a lasting peace treaty."

2

In law, a third party who is permitted by a court to join an ongoing lawsuit between original litigants in order to protect an affected legal interest or provide relevant arguments.

Example

"The environmental coalition applied for status as an intervener in the Supreme Court appeal."

Synonyms
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Antonyms
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Word Nuance & Usage

In general contexts, 'intervener' is the standard spelling, whereas 'intervenor' is frequently preferred in technical legal terminology.

• Rhymes for intervener

• Nearby Words

interurban
interval
intervene
intervener
intervention
interventionist
interview

Word Origin & Etymology

Formed in English from the verb 'intervene' (from Latin 'intervenire', meaning 'to come between') plus the agentive suffix '-er'.

Cite this Entry

Wordmom. (2026). Definition of Intervener. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/intervener
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