Synonyms of volunteer in English:

volunteer


See US English definition of volunteer

See UK English definition of volunteer

See Spanish definition of voluntario

verb

1‘I volunteered my services as a school governor’

SYNONYMS
offer, tender, proffer, present, put forward, put up, venture
ANTONYMS

refuse, withdraw

2‘he volunteered as an ambulance driver on the Italian front’

SYNONYMS
offer one's services, present oneself, step forward, come forward, make oneself available
ANTONYMS

be conscripted


noun

1‘during the investigation, each volunteer was studied three times’

SYNONYMS
subject, participant, case, client, patient
informal guinea pig