voluntary
vɒlənˈtɛri
Definitions
1. adjective
done or given freely, without being forced or paid for
“She made a voluntary donation to the charity.”
2. noun
a person who serves in the armed forces by choice, rather than being conscripted
“He enlisted as a voluntary in the army.”
3. noun
a statement or action that is not legally required but is considered acceptable or desirable
“The company made a voluntary recall of the faulty products.”
4. noun
a group of people who have chosen to work together for a particular cause
“The voluntary workers helped with the disaster relief efforts.”