| engagement(noun, understanding, right, responsibility, contract) |
| in the red(noun, expression, idiom, loss, required) |
| inadequacy(noun, loss, shortage, discrepancy, required) |
| insufficiency(noun, loss, shortage, discrepancy, required) |
| lack(noun, loss, shortage, discrepancy, required) |
| liability(noun, understanding, right, responsibility, contract) |
| loss(noun, shortage, discrepancy, required, shortfall) |
| must(noun, understanding, right, responsibility, contract) |
| necessity(noun, understanding, right, responsibility, contract) |
| need(noun, understanding, right, responsibility, contract) |
| occasion(noun, understanding, right, responsibility, contract) |
| onus(noun, understanding, right, responsibility, contract) |
| ought(noun, understanding, right, agreement, responsibility) |
| part(noun, understanding, right, responsibility, contract) |
| paucity(noun, loss, shortage, discrepancy, required) |
| promise(noun, understanding, right, responsibility, contract) |
| required(noun, loss, shortage, discrepancy, deficit) |
| requirement(noun, understanding, right, responsibility, contract) |
| responsibility(noun, understanding, right, contract, duty) |
| right(noun, understanding, responsibility, contract, duty) |