Collaborate
[kə'læbəreɪt] or [kə'læbəret]
Definition
(verb.) work together on a common enterprise of project; 'The soprano and the pianist did not get together very well'; 'We joined forces with another research group'.
(verb.) cooperate as a traitor; 'he collaborated with the Nazis when they occupied Paris'.
Typist: Loretta--From WordNet