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.

Since taking office, the Lee Jae Myung administration has worked closely with the U.S. to strengthen and modernize our alliance, expanding cooperation across security, economic resilience, advanced technologies and strategic industries.

From The Wall Street Journal • Jun. 5, 2026

"With the cooperation of hunters, police and firefighters, I believe we took all possible measures available to us" to catch it, Baba said.

From Barron's • Jun. 5, 2026

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

"We ask for your cooperation in creating a city where everyone can enjoy themselves comfortably."

From BBC • Jun. 1, 2026

She was asking for Janine’s attention, her cooperation.

From "The Handmaid's Tale" by Margaret Atwood

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!