cooperate
Pronunciation: /kəʊˈɒpəreɪt/
(also co-operate)
verb

Origin:
late 16th century: from ecclesiastical Latin cooperat- 'worked together', from the verb cooperari, from co- 'together' + operari 'to work'

Spelling help
Cooperate and its related words (such as cooperative) may also be spelled with a hyphen: co-operate, co-operative.