1. past tense of cooperate; worked together with others toward a common goal or purpose
2. past tense of cooperate; complied with requests or commands, especially from authorities

Examples

• The two companies cooperated to develop new technology.
• Students cooperated on the group project to finish it on time.
• The witness cooperated fully with the police investigation.
• All departments cooperated to make the event successful.
• The suspect cooperated with authorities and provided useful information.
• Countries cooperated to address the global climate crisis.
• The children cooperated well during the team-building exercise.