| unconstrained(adjective, feature, characteristic, free, deliberate) |
| volitional(adjective, feature, characteristic, open, free) |
| volunteer(adjective, feature, characteristic, free, deliberate) |
| celebratory(adjective, feature, characteristic, respect) |
| congratulatory(adjective, feature, characteristic, respect) |
| honorable(adjective, feature, characteristic) |
| honorary(adjective, feature, characteristic, free, respect) |
| honourable(adjective, feature, characteristic) |
| intended(adjective, feature, characteristic, free, deliberate) |
| intentional(adjective, feature, characteristic, free, deliberate) |
| uncompelled(adjective, free, deliberate, natural, witting) |
| unpaid(adjective, feature, characteristic, free, deliberate) |
| willed(adjective, feature, characteristic, free, deliberate) |
| willful(adjective, free, deliberate, natural, witting) |
| facultative(adjective, open, free, voluntary, elective) |
| unbidden(adjective, free, deliberate, natural, witting) |
| uncoerced |
| uncompensated(adjective, feature, characteristic, unrewarded, unremunerated) |
| unprompted(natural, spontaneous, voluntary) |
| unsalaried(adjective, feature, characteristic, unrewarded, unremunerated) |