noun
plural -teers
[count] :someone who does something without being forced to do it: such as
a person who chooses to join the military
a person who does work without getting paid to do it
verb
-teers; -teered; -teering
[no obj]
to offer to do something without being forced to or without getting paid to do it
to choose to join the military
[+ obj] :to give (something) without being forced to or without getting paid for it
[+ obj] :to say that someone will do something without asking if he or she wants to do it
adjective
always used before a noun
of, relating to, or done by volunteers
