| offer(verb, accept, present, start, agree) |
| voluntary(noun, adjective, feature, characteristic, work) |
| come forward(verb, expression, phrasal verb, present, agree) |
| proffer(verb, present, agree, allow, yield) |
| propose(verb, give, present, agree, yield) |
| unpaid(adjective, feature, characteristic, free, deliberate) |
| enlist(verb, agree, sign, offer, undertake) |
| tender(verb, present, agree, yield, urge) |
| unforced(adjective, feature, characteristic, free, regard) |
| military volunteer(noun, expression, idiom) |
| extend(verb, give, show, present, allow) |
| present oneself(expression, idiom, offer, offer oneself) |
| sign up(verb, expression, phrasal verb, agree, offer) |
| spontaneous(adjective, feature, characteristic, free, regard) |
| venture(verb, take, accept, start, try) |
| advance(verb, present, agree, allow, yield) |
| community |
| pitch in(verb, expression, phrasal verb, help, attack) |
| unasked(adjective, feature, characteristic, free, regard) |
| volunteering |