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.

Japanese Prime Minister Sanae Takaichi announced the new cooperation framework on Wednesday after an online meeting with other Asian leaders.

From BBC • Apr. 16, 2026

Building a castell requires intense tactile cooperation, triggering fear and embarrassment, and dismantling professional hierarchies.

From The Wall Street Journal • Apr. 14, 2026

Likewise, Velasco has vowed that Mexico would never yield its “sovereignty,” assuring his fellow diplomats that the country would “maintain a cooperation in matters of security ... without subordination.”

From Los Angeles Times • Apr. 14, 2026

"I look forward to further strengthening cooperation between Croatia and Hungary, both bilaterally and at the European level," said Croatia's Prime Minister Andrej Plenkovic after a phone call with Magyar.

From Barron's • Apr. 12, 2026

This highly refined coordination and cooperation must be multiplied out across eight individuals of varying statures and physiques to make the most of each individual’s strengths.

From "The Boys in the Boat: Nine Americans and Their Epic Quest for Gold at the 1936 Berlin Olympics" by Daniel James Brown

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!