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.

Castro Espín talked for nearly an hour recounting details of cooperation between the Cuban and U.S. governments going back several administrations that surprised Deare.

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

Likewise, Velasco has vowed that Mexico would never yield its “sovereignty,” assuring his fellow diplomats that the country would “maintain a cooperation in matters of security ... without subordination.”

From Los Angeles Times • Apr. 14, 2026

The envoy said Russia was committed to helping him and proposed cooperation with Equatorial Guinea to prevent such cases in the future, a statement by the African government said.

From Barron's • Apr. 13, 2026

"Once we find him, we won't bother you for anything else. We appreciate all your cooperation so far. And you have my card. Please call me the second you see or hear from him."

From "The Sky at Our Feet" by Nadia Hashimi

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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