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.

In an interview with the BBC's Political Thinking podcast, Lord Hermer said the Labour government had been able to reduce the number of people making the dangerous journey through international cooperation and agreements.

From BBC • Jun. 5, 2026

Since taking office, the Lee Jae Myung administration has worked closely with the U.S. to strengthen and modernize our alliance, expanding cooperation across security, economic resilience, advanced technologies and strategic industries.

From The Wall Street Journal • Jun. 5, 2026

"With the cooperation of hunters, police and firefighters, I believe we took all possible measures available to us" to catch it, Baba said.

From Barron's • Jun. 5, 2026

Their mother made Jerry her health proxy and Arnold the executor of her will, forcing in effect their cooperation.

From Los Angeles Times • Jun. 3, 2026

They declared blandly that the bill was unnecessary because cooperation and consultation were “usual.”

From "Silent Spring" by Rachel Carson

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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