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.

It is the most popular game on earth because it asks for nothing but a ball and other people, and rewards what the strongman cannot abide: cooperation, trust, the surrender of the self.

From Slate • Jun. 11, 2026

The author also discusses molecular cooperation and co-evolution during the earliest stages of life's emergence, as well as additional physical perspectives on the OoL, including ideas related to the chiral origin of biomolecules.

From Science Daily • Jun. 10, 2026

The heads of the Pakistani and Lebanese armed forces agreed to boost cooperation on Tuesday as they met in Pakistan with peace talks over the Middle East war dragging on.

From Barron's • Jun. 9, 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

The National American Woman Suffrage Association decided to stand with President Woodrow Wilson and back the war effort, hoping that their cooperation would earn Wilson’s support of suffrage after the war.

From "Votes for Women!" by Winifred Conkling

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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