col·lab·o·rate

[kuh-lab-uh-reyt]
verb (used without object), col·lab·o·rat·ed, col·lab·o·rat·ing.
1.
to work, one with another; cooperate, as on a literary work: They collaborated on a novel.
2.
to cooperate, usually willingly, with an enemy nation, especially with an enemy occupying one's country: He collaborated with the Nazis during World War II.

Origin:
1870–75; < Late Latin collabōrātus (past participle of collabōrāre), equivalent to col- col-1 + labor work + -ātus -ate1

col·lab·o·ra·tor, noun

collaborate, corroborate.


2. collude, join, assist, abet.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To collaborator
00:10
Collaborator is always a great word to know.
So is quincunx. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a fool or simpleton; ninny.
Collins
World English Dictionary
collaborate (kəˈlæbəˌreɪt) [Click for IPA pronunciation guide]
 
vb (often foll by on, with, etc)
1.  to work with another or others on a joint project
2.  to cooperate as a traitor, esp with an enemy occupying one's own country
 
[C19: from Late Latin collabōrāre, from Latin com- together + labōrāre to work]
 
col'laborative
 
adj
 
col'laborator
 
n

collaborate (kəˈlæbəˌreɪt) [Click for IPA pronunciation guide]
 
vb (often foll by on, with, etc)
1.  to work with another or others on a joint project
2.  to cooperate as a traitor, esp with an enemy occupying one's own country
 
[C19: from Late Latin collabōrāre, from Latin com- together + labōrāre to work]
 
col'laborative
 
adj
 
col'laborator
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

collaborate
1871, back-formation from collaborator (1802), from Fr. collaborateur, from L. collaboratus, pp. of collaborare "work with," from com- "with" + labore "to work."
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
But the other is really the opposite, as when a senior researcher and his or
  her junior collaborator are near neighbors.
We are seeking that unique individual who is an energetic, engaged thought
  leader, convener and collaborator.
Add a collaborator by clicking on the plus sign highlighted in green.
Ward is the perfect collaborator for her, doing the grunt work so she can focus
  on singing and being cool.
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