Englishfor English speakers
volunteer
Noun
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A volunteer is someone who does work because they want to, without being paid.
We have one paid manager and five volunteers working on this project.
volunteer
Verb
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To do something voluntarily.
I volunteered to do the dishes after dinner to help my mom clean up.
Julie volunteered an explanation without even being asked.
system
Noun
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A group of things that work together; a way of doing something.
This coloured paper is part of my system for keeping lists of people.