voluntarily

They will never voluntarily relinquish their independence.

He voluntarily surrendered himself to the police.

landowners who freed their slaves voluntarily

We prefer you to work voluntarily rather than by coercion.

One patient with transversal injury of choledoch voluntarily left the hospital because of occurrence of extrahepatic obstructive biliary cirrhosis after the operations.

voluntarily participate in the project

voluntarily resign from the position

voluntarily attend the meeting

voluntarily help others in need

voluntarily join the organization

voluntarily take on extra responsibilities

voluntarily participate in the survey