| unsalaried(adjective, feature, characteristic, work, pay) |
| unpaid(adjective, feature, characteristic, work, pay) |
| volunteer(adjective, feature, characteristic, regard, unpaid) |
| voluntary(adjective, feature, characteristic, work, pay) |
| gratuitous(adjective, feature, characteristic, unpaid) |
| unforced(adjective, feature, characteristic, regard, unrewarded) |
| unrecompensed(adjective, work, pay, unpaid, unrewarded) |
| unremunerated(adjective, work, pay, unpaid, unrewarded) |
| honorable(adjective, feature, characteristic) |
| honorary(adjective, feature, characteristic, regard, unpaid) |
| honourable(adjective, feature, characteristic) |
| intended(adjective, feature, characteristic, regard) |
| intentional(adjective, feature, characteristic, regard) |
| spontaneous(adjective, feature, characteristic, regard) |
| unasked(adjective, feature, characteristic, regard) |
| unconstrained(adjective, feature, characteristic, regard) |
| volitional(adjective, feature, characteristic, regard) |
| willed(adjective, feature, characteristic, regard) |
| designful(adjective, feature, characteristic, unrewarded, unremunerated) |
| discretional(adjective, feature, characteristic, unrewarded, unremunerated) |