cooperative
Willing to work well with others toward a shared goal.
Cooperative means working together toward a shared goal. When students are cooperative during a group project, they listen to each other's ideas, divide up tasks fairly, and help each other succeed. A cooperative person doesn't insist on doing everything their own way or refuse to contribute. They understand that combining everyone's efforts produces better results than working alone.
In everyday life, being cooperative makes difficult tasks easier and more enjoyable. If your family is cleaning the house, a cooperative approach means everyone pitching in without complaining or arguing about who does what. Teachers often ask students to be cooperative during activities because cooperation helps the whole class learn more effectively.
The word can also describe formal organizations where people work together for mutual benefit. A grocery cooperative is a store owned jointly by its members, who share the work and the profits. Farmers sometimes form cooperatives to sell their crops together, gaining advantages they couldn't achieve individually.
Notice that being cooperative doesn't mean agreeing with everything or never having your own opinions. It means finding ways to work productively with others even when you see things differently. The opposite of cooperative is uncooperative: stubborn, resistant, or unwilling to work with others toward common goals.