Words similar to voluntary

Example sentences for: voluntary

How can you use “voluntary” in a sentence? Here are some example sentences to help you improve your vocabulary:

The problem of exploitation in apparently voluntary sexual relations has long been with us.
the effectiveness of voluntary or information programs may be less than assumed in the CEF scenarios.
Under current law, such expenditures must be publicly disclosed, and corporations and unions are forbidden to make them (except through PACs, which raise money from employees and members ostensibly on a voluntary basis and have their own set of financial limits).
Those same sources also made it clear that the gun nut wasn't arrested outside Shearer's house, but in fact arranged voluntary surrender to the police a few days later.
Obviously, societal conditions so propitious for encompassing voluntary federations have changed a lot.