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.

"The Chinese government attaches great importance to this trend," the embassy said in a statement, pledging closer cooperation with Sri Lankan law enforcement agencies.

From Barron's • May 17, 2026

"We've been talking about swarm technology for a very long time, and we in the military have been waiting for it even longer," said Volodymyr "Colt", the head of civil-military cooperation at Ukraine's 412th brigade.

From Barron's • May 15, 2026

He also called for expanded cooperation in trade, agriculture, healthcare, tourism and law enforcement, describing bilateral ties as "mutually beneficial" and delivering "win-win results".

From BBC • May 14, 2026

—Asian stocks were broadly lower despite a positive tone from the Trump-Xi summit, where both leaders emphasized cooperation.

From The Wall Street Journal • May 14, 2026

The program was conducted by the Michigan Department of Agriculture with the cooperation of the United States Department of Agriculture; its announced purpose was control of the Japanese beetle.

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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