0 past simple and past participle of volunteer
1 to offer to do something that you do not have to do, often without having been asked to do it and/or without expecting payment:
[ + to infinitive ] During the emergency many staff volunteered to work through the weekend.
He volunteered for the army (= he joined even though he did not have to).
I volunteered myself for the position of Health and Safety Representative.
If I were you, I wouldn't volunteer any details of what happened.
[ + speech ] "I saw her going out of the main entrance half an hour ago," he volunteered.
You can accuse me of cowardice, but I still wouldn't volunteer to fight in a war.
I volunteered to do the washing up.
Did anybody volunteer to tidy up?
The few words he volunteered during the final sequence are a case in point.
Twelve of the interviewees volunteered during recruitment that their consultation that day was related to a perceived minor ailment episode.
The participants volunteered and were paid on completion of the tasks.
