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 French and German defence ministries are set to draw up a plan for defence cooperation "focused on a few realistic and relevant projects" at a forthcoming meeting, the official added.

From Barron's • Jun. 8, 2026

France and Germany said on Monday they had agreed to abandon a joint fighter jet programme due to disagreements between the companies involved, in a blow to European efforts to boost defence cooperation.

From Barron's • Jun. 8, 2026

After Russia's invasion of Ukraine, North Korea has expanded military cooperation with Putin, culminating in a mutual defence pact that was signed during Putin's visit to Pyongyang in 2024.

From BBC • Jun. 7, 2026

Sheinbaum has said Mexico welcomes intelligence sharing and law-enforcement cooperation but doesn’t permit direct U.S. involvement in operations on Mexican soil.

From The Wall Street Journal • Jun. 6, 2026

Reliable information about who could be trusted meant that small bands could expand into larger bands, and Sapiens could develop tighter and more sophisticated types of cooperation.

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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