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.

Ambassador Ronald Johnson wrote on X that he wished him “every success” as the U.S. and Mexican governments work to “advance the historic cooperation led by” Presidents Trump and Sheinbaum.

From Los Angeles Times • Apr. 14, 2026

"I look forward to further strengthening cooperation between Croatia and Hungary, both bilaterally and at the European level," said Croatia's Prime Minister Andrej Plenkovic after a phone call with Magyar.

From Barron's • Apr. 12, 2026

"These findings paint a picture of dynamic interactions shaped by both cooperation and competition."

From Science Daily • Apr. 12, 2026

So did the fact that Burke had ended cooperation with the FBI into the investigation, much to the ire of many Long Island cops.

From BBC • Apr. 10, 2026

It was, all in all, a grand example of interspecies lack of cooperation and the further illustration that might makes right.

From This Side of Wild by Gary Paulsen

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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