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.

Their mother made Jerry her health proxy and Arnold the executor of her will, forcing in effect their cooperation.

From Los Angeles Times • Jun. 3, 2026

HPE on Monday also said it was adding Elliott Investment Management partner Chris Hsu to its board pursuant to a 2025 cooperation agreement with the activist investor.

From The Wall Street Journal • Jun. 1, 2026

"We ask for your cooperation in creating a city where everyone can enjoy themselves comfortably."

From BBC • Jun. 1, 2026

The arc of history today bends not towards cooperation, but competition.

From MarketWatch • May 31, 2026

“I’m not trying to blame you, Gilly. It’s just that I need, we all need, your cooperation if any kind of arrangement is to work out.”

From "The Great Gilly Hopkins" by Katherine Paterson

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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