/ kəˈlæbəreɪt; NAmE / verb [ v ]
1.
collaborate (with sb) (on sth) | collaborate (with sb) (in sth / in doing sth) to work together with sb in order to produce or achieve sth :
[ v ]
We have collaborated on many projects over the years.
She agreed to collaborate with him in writing her biography.
Researchers around the world are collaborating to develop a new vaccine.
2.
collaborate (with sb) ( disapproving ) to help the enemy who has taken control of your country during a war
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WORD ORIGIN
late 19th cent.: from Latin collaborat- worked with, from the verb collaborare , from col- together + laborare to work.