collaborated; collaborating
Definition of collaborate
1
: to work jointly with others or together especially in an intellectual endeavor
An international team of scientists collaborated on the study.
2
: to cooperate with or willingly assist an enemy of one's country and especially an occupying force
suspected of collaborating with the enemy
3
: to cooperate with an agency or instrumentality with which one is not immediately connected
The two schools collaborate on library services.
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Merriam-Webster unabridged
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Time Traveler for collaborate
The first known use of collaborate was in 1871
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