co·op·er·ate

[koh-op-uh-reyt]
verb (used without object), co·op·er·at·ed, co·op·er·at·ing.
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.
3.
to practice economic cooperation.
Also, co-op·er·ate.


Origin:
1595–1605; < Late Latin cooperātus past participle of cooperārī to work with. See co-, operate

co·op·er·a·tor, co-op·er·a·tor, noun
un·co·op·er·at·ing, adjective


2. collaborate, join, participate.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To cooperate
00:10
Cooperate is always a great word to know.
So is ninnyhammer. Does it mean:
a fool or simpleton; ninny.
a chattering or flighty, light-headed person.
Collins
World English Dictionary
cooperate or co-operate (kəʊˈɒpəˌreɪt) [Click for IPA pronunciation guide]
 
vb
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
 
[C17: from Late Latin cooperārī to work with, combine, from Latin operārī to work]
 
co-operate or co-operate
 
vb
 
[C17: from Late Latin cooperārī to work with, combine, from Latin operārī to work]
 
co'operator or co-operate
 
n
 
co-'operator or co-operate
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

cooperate
1610s, from L. cooperat-, pp. stem of cooperari (see cooperation). Related: Cooperating (1640s).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
However, it's generally illegal to refuse to cooperate with flight attendants' instructions.
There is not much incentive to cooperate outside your own research group.
People who don't cooperate are eventually shunned or jailed.
Bowman also agreed to cooperate with prosecutors' investigation of the company.
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