Meaning of Cooperate To work together with others for a common goal. To be helpful and willing to follow rules or requests. Example Sentences All team members must cooperate to succeed. Please cooperate with the staff during the check. The two companies agreed to cooperate on the project. Children should learn to cooperate with each other. The public was asked to cooperate with the police. We need to cooperate to solve this problem. She refused to cooperate with the investigation. Good leaders e