Simple English definitions for legal terms
Read a random definition: Winchester measure
Voluntary: When we talk about the law, "voluntary" means that someone did something on purpose. For example, "voluntary waste" means someone intentionally damaged property or used up natural resources. "Voluntary manslaughter" means someone intentionally killed another person because they were very angry or upset. "Voluntary bankruptcy" means someone chose to declare bankruptcy themselves, instead of being forced to by someone else.
In law, the term "voluntary" means that something was done on purpose or with intention.
These examples show that the actions were done on purpose or with intention, which is what makes them "voluntary" under the law.