volunteer UK /ˌvɒl(ə)nˈtɪə/US /ˌvɑlənˈtɪɹ/noun 6verb 5forms 3phrases 1 noun6 •a person who gives time and work to a cause by choice, often for no moneyThe volunteers at the nature reserve meet up ever other Sunday to help its upkeep. •One who enters into military service voluntarily (but who, when in service, is subject to discipline and regulations like other soldiers), as opposed to a conscript. •A voluntary member of the organized militia of a country, as distinguished from a regular or member of the standing army. •A person who acts out of their own will without a legal obligation, such as a donor. •A plant that grows spontaneously, without being cultivated on purpose; see volunteer plant in Wikipedia. •A native or resident of the American state of Tennessee. verb5 •To enlist oneself as a volunteer. •To do or offer to do something voluntarily. •To offer, usually unprompted. •(informal) To offer the services of (someone else) to do something.My sister volunteered me to do the dishes. •To grow without human sowing or intentional cultivation. formsvolunteered · volunteering · volunteers Phrases with volunteer army volunteerTo make someone perform a task or duty, especially one they are not prepared or willing to do.