| volunteer(adjective, characteristic, payment, compensation) |
| without consideration(expression, characteristic, payment, compensation) |
| pigeon-livered(adjective, characteristic, calm, quiet, humble) |
| humble(adjective, characteristic, calm, quiet, shy) |
| dumb(adjective, characteristic, calm, quiet, humble) |
| meek(adjective, characteristic, calm, quiet, humble) |
| can't say boo to a goose(expression, adjective, characteristic, calm, quiet) |
| acquiescent(adjective, characteristic, calm, quiet, humble) |
| lamblike(adjective, characteristic, calm, quiet, humble) |
| submissive(adjective, characteristic, humble, shy, docile) |
| outstanding(adjective, characteristic, payment, bill, debt) |
| owing(adjective, characteristic, feeling, debt, one-sidedness) |
| taciturn(adjective, characteristic, calm, quiet, humble) |
| pigeon livered(expression, characteristic, modesty, taciturnity) |
| unbalanced(adjective, characteristic, payment, bill) |
| unrevenged(adjective, characteristic, revenge, vengeance) |
| uncleared(adjective, characteristic, payment, bill) |
| unsettled(adjective, characteristic, payment, bill) |
| passed(adjective, characteristic, payment, bill) |
| wordless(adjective, calm, quiet, humble, silent) |