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.

Building a castell requires intense tactile cooperation, triggering fear and embarrassment, and dismantling professional hierarchies.

From The Wall Street Journal • Apr. 14, 2026

The search tool was set up by the German newspaper, Die Zeit, in cooperation with archives in Germany and in the United States.

From BBC • Apr. 14, 2026

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

The police statement said the arrest was the result of "international police cooperation between the Federal Police and US law enforcement authorities."

From Barron's • Apr. 13, 2026

Then, if Wolf Head truly knew Leo’s mind, he would decide there were other ways to force his cooperation.

From "The Mark of Athena" by Rick Riordan

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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