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.

Some Israeli political officials expressed hope for full-blown peace, with economic cooperation and tourism.

From The Wall Street Journal • Apr. 17, 2026

The UK's increased cooperation with other European powers is already particularly evident when it comes to security and defence - take the common approach on Ukraine, for example, with the UK in a leadership role.

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

"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

While human evolution was crawling at its usual snail’s pace, the human imagination was building astounding networks of mass cooperation, unlike any other ever seen on earth.

From "Sapiens: A Brief History of Humankind" by Yuval Noah Harari

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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