| outstanding(adjective, slow, pay, unsettled, late) |
| due(adjective, free, outstanding, pay, unsettled) |
| gratuitous(adjective, feature, state, characteristic, free) |
| owing(adjective, outstanding, pay, unsettled, late) |
| honorary(adjective, feature, state, characteristic, free) |
| voluntary(adjective, feature, characteristic, work, free) |
| unsalaried(adjective, feature, characteristic, work, free) |
| owed(adjective, pay, unpaid and overdue) |
| volunteer(adjective, feature, characteristic, free, deliberate) |
| free(adjective, feature, characteristic, charge, deliberate) |
| delinquent(adjective, outstanding, unsettled, late, criminal) |
| overdue(adjective, slow, outstanding, unsettled, late) |
| payable(adjective, slow, outstanding, pay, unsettled) |
| in arrears(expression, adjective, idiom, outstanding, unsettled) |
| amateur(adjective, voluntary, honorary) |
| complimentary(adjective, feature, state, characteristic, free) |
| unsettled(adjective, slow, outstanding, pay, late) |
| honourable(adjective, feature, state, characteristic) |
| uncompensated(adjective, feature, characteristic, work, pay) |
| unremunerated(adjective, work, pay, nonpayment, unrewarded) |