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.

Their mother made Jerry her health proxy and Arnold the executor of her will, forcing in effect their cooperation.

From Los Angeles Times • Jun. 3, 2026

HPE on Monday also said it was adding Elliott Investment Management partner Chris Hsu to its board pursuant to a 2025 cooperation agreement with the activist investor.

From The Wall Street Journal • Jun. 1, 2026

The arc of history today bends not towards cooperation, but competition.

From MarketWatch • May 31, 2026

We agreed on the importance of cooperation and avoiding isolationism, recognising that public health threats do not respect borders and require coordinated regional and global action.

From BBC • May 29, 2026

Over half the lunch was thus wasted when Maurice changed the topic to Rosy and droned on and on about her lack of cooperation.

From "Double Helix" by James D. Watson

Vocabulary lists containing cooperation

Ecology - Interdependent Relationships in Ecosystems - Introductory

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Lyndon B. Johnson on "The Great Society" (1964)

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

John F. Kennedy, Inaugural Address, January 20, 1961

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!