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Synonyms

cooperate

American  
[koh-op-uh-reyt] / koʊˈɒp əˌreɪt /
Or co-operate

verb (used without object)

cooperated, cooperating
  1. to work or act together or jointly for a common purpose or benefit.

  2. to work or act with another or other persons willingly and agreeably.

    Synonyms:
    participate, join, collaborate
  3. to practice economic cooperation.


cooperate British  
/ kəʊˈɒpəˌreɪt /

verb

  1. to work or act together

  2. to be of assistance or be willing to assist

  3. economics (of firms, workers, consumers, etc) to engage in economic cooperation

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • co-operator noun
  • cooperator noun
  • uncooperating adjective

Etymology

Origin of cooperate

First recorded in 1595–1605; from Late Latin cooperātus, past participle of cooperārī “to work with”; co-, operate

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 one who wondered whether her body would ever cooperate with her longing.

From Slate • Mar. 29, 2026

The navy is also in contact "with the diplomatic missions of the crew members' countries of origin" to cooperate and exchange information in real time, the statement said.

From Barron's • Mar. 27, 2026

“Will the federal government or other states cooperate with that? I think the answer to that is sort of iffy,” said Ilya Somin, a law professor at George Mason University in Virginia.

From Salon • Mar. 27, 2026

Even knowing they must cooperate with the very people they’re competing against, as alliances form and fracture, each day grows more fraught.

From Los Angeles Times • Mar. 25, 2026

“As is Abnegation. I am sure that once the remains of your old faction are absorbed into the Dauntless army, Candor will cooperate and we will finally be able to get on with things.”

From "Divergent" by Veronica Roth