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.

Downing Street said Sir Keir had "committed to boosting the country's security and resilience" and in his role, Brown "will advise on how global finance cooperation can help to achieve this".

From BBC • May 9, 2026

Paraguay and Taiwan were to sign agreements on mutual legal assistance in criminal matters, cooperation in cybersecurity, as well as an AI and computing infrastructure investment project.

From Barron's • May 8, 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

Neanderthals and archaic Homo sapiens probably also had a hard time talking behind each other’s backs—a much maligned ability which is in fact essential for cooperation in large numbers.

From "Sapiens: A Brief History of Humankind" by Yuval Noah Harari

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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