Main Entry: co·op·er·ate

Pronunciation: \kō-ˈä-pə-ˌrāt\

Function: intransitive verb

Etymology: Late Latin cooperatus, past participle of cooperari, from Latin co- + operari to work — more at operate

Date: 1582

1 : to act or work with another or others : act together or in compliance <refused to cooperate with the police>
2 : to associate with another or others for mutual benefit <nations cooperating in a trade agreement>

— co·op·er·a·tor \-ˌrā-tər\ noun