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[koh-op-uh-reyt] /koʊˈɒp əˌreɪt/
verb (used without object), cooperated, cooperating.
to work or act together or jointly for a common purpose or benefit.
to work or act with another or other persons willingly and agreeably.
to practice economic cooperation.
Also, co-operate.
Origin of cooperate
1595-1605; < Late Latin cooperātus past participle of cooperārī to work with. See co-, operate
Related forms
cooperator, co-operator, noun
uncooperating, adjective
2. collaborate, join, participate. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for cooperating
  • Furthermore, the colonists had virtually no history of cooperating with one another, even in the face of danger.
  • People started to make deals for themselves by cooperating.
  • His brain-imaging studies have revealed a potential connection between the act of cooperating and the brain's reward centers.
  • Maintaining friendly relations, sharing resources, and cooperating led to new patterns of social organization.
  • So far the project has helped launch five stations, with two more in the pipeline, and is cooperating with another nine.
  • The weather was not cooperating and thick clouds enshrouded the way.
  • Its leaders are cooperating in an effort to bring about real reform in a way that was unthinkable a few months ago.
  • And cooperating traditional colleges can identify highly talented students who otherwise might be overlooked.
  • Only instead of cooperating to build collections, libraries are now cooperating to deconstruct them.
  • Not cooperating with the rankings affects my life and the life of the college in several ways.
British Dictionary definitions for cooperating


verb (intransitive)
to work or act together
to be of assistance or be willing to assist
(economics) (of firms, workers, consumers, etc) to engage in economic cooperation
Derived Forms
cooperator, co-operator, noun
Word Origin
C17: from Late Latin cooperārī to work with, combine, from Latin operārī to work
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
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Word Origin and History for cooperating



also co-operate, c.1600, from Late Latin cooperatus, past participle of cooperari "to work together with" (see cooperation). Related: Cooperated; cooperating.

Online Etymology Dictionary, © 2010 Douglas Harper
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