co-operate

co-operate (third-person singular simple present co-operates, present participle co-operating, simple past and past participle co-operated)

1. (UK) Alternative spelling of cooperate
   • 1946, Lin Yutang, The Vigil of a Nation‎, William Heinemann, page viii:

     I am personally willing to assist in any international group to visit various localities in Hopei to verify the burial alive of hundreds of people who refused to co-operate with the "anti-Japanese" Red regime and were therefore "traitors". Such things do not make Edgar Snow angry.

• “co-operate”, in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.