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 parties also entered into cooperation agreements from 2016 to 2017 and from 2021 to 2024, in which Plaid remained in opposition but worked together with Welsh Labour on certain policies.

From BBC • Apr. 19, 2026

Recent research continues to support this perspective, emphasizing that social cooperation and cultural change are essential for addressing global environmental challenges.

From Science Daily • Apr. 19, 2026

Dulles came to believe that religion, specifically an ecumenical Protestantism aiming to promote cooperation among different sects, was the missing link that could provide a moral architecture for the global system.

From The Wall Street Journal • Apr. 15, 2026

The partnership covers "military modernization and capacity building," "training and professional military education" and "exercises and operational cooperation," according to a joint statement.

From Barron's • Apr. 14, 2026

Nor would I publish the story without the full cooperation and approval of Mrs. Lakes’ family.

From "The Immortal Life of Henrietta Lacks" by Rebecca Skloot

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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