cooperation

[koh-op-uh-rey-shuhn] / koʊˌɒp əˈreɪ ʃən /

NOUN

mutual effort

Synonyms

STRONGEST

aid assistance collaboration participation partnership service unity

STRONG

alliance cahoots coaction coalition combination communion company concert concurrence confederacy confederation conspiracy federation fusion give-and-take harmony help helpfulness logrolling partisanship reciprocity responsiveness society symbiosis synergism synergy teamwork unanimity union

WEAK

coadjuvancy combined effort confunction doing business with esprit de corps playing ball teaming

Antonyms

STRONG

antagonism disagreement discord disunion disunity division divorce hostility management separation

WEAK

blockage delay encumbrance hindrance obstruction prevention stoppage

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“Mr. Zambada has not entered into any cooperation agreement, has not pled pursuant to any cooperation arrangement, and is not cooperating with the United States government in any capacity.”

From Los Angeles Times • May 10, 2026

The cooperation between our human ancestors may have been more flexible, without rigid rules about who was allowed to reproduce.

From Slate • May 10, 2026

And the survey found overwhelming support for deeper EU cooperation on defence and security, with 81 percent backing a common policy in the area -- the highest level in 20 years.

From Barron's • May 8, 2026

The memorial also signifies Pyongyang's willingness to continue military cooperation with Russia "regardless of how the war unfolds".

From BBC • May 7, 2026

Perhaps the most striking illustration is to be found in the cooperation between Great Britain, the United States of America and the Soviet Union in the fight against Hider.

From "Long Walk to Freedom" by Nelson Mandela

Vocabulary lists containing cooperation

Ecology - Interdependent Relationships in Ecosystems - Introductory

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Lyndon B. Johnson on "The Great Society" (1964)

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John F. Kennedy, Inaugural Address, January 20, 1961

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