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.

Japanese Prime Minister Sanae Takaichi announced the new cooperation framework on Wednesday after an online meeting with other Asian leaders.

From BBC • Apr. 16, 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

The U.A.E. is in talks with Kyiv about a defense cooperation pact, and it has asked South Korean companies to supply more interceptor missiles, according to people familiar with the request said.

From The Wall Street Journal • Apr. 12, 2026

This highly refined coordination and cooperation must be multiplied out across eight individuals of varying statures and physiques to make the most of each individual’s strengths.

From "The Boys in the Boat: Nine Americans and Their Epic Quest for Gold at the 1936 Berlin Olympics" by Daniel James Brown

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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