Voluntarily/ˌvɑːlənˈterəli/ Definition 1 of 1Pro Tip 1/3Positive Action Using 'voluntarily' often implies a positive or helpful action taken by someone. He voluntarily cleaned the park every weekend. Pro Tip 2/3Personal Initiative It suggests someone is taking initiative, not waiting to be asked. They voluntarily organized a study group for the class. Pro Tip 3/3Not Obligatory 'Voluntarily' implies that there was no obligation or expectation to take action. She voluntarily apologized first, even though it wasn't required.