say it: vah-luhn-TIR
volunteer is a noun, verb and adjective meaning "(military) a person who freely enlists for service". It carries 7 recorded senses.
(military) a person who freely enlists for service
military
a person who performs voluntary work
a native or resident of Tennessee
do volunteer work
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for volunteer come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.