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.

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

The French and German defense ministries will meet in July to develop a realistic road map for future defense cooperation based on a limited number of more relevant and realistic projects, the German official added.

From The Wall Street Journal • Jun. 8, 2026

But, he adds, expanding military cooperation between Russia and North Korea could spark a stronger trilateral military response from the US, Japan and South Korea, which would worry Beijing.

From BBC • Jun. 7, 2026

She has said cooperation with Washington will continue while warning that Mexico won’t tolerate interference in its domestic politics.

From The Wall Street Journal • Jun. 6, 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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