| Clue | Length | Answer |
|---|---|---|
| Robustness | 3 letters | vim |
| Robustness | 4 letters | zest |
| Robustness | 5 letters | vigor |
| Robustness | 6 letters | vigour |
| Robustness | 6 letters | spirit |
| Robustness | 6 letters | warmth |
| Robustness | 7 letters | stamina |
| Robustness | 8 letters | strength |
| Robustness | 8 letters | vivacity |
| Robustness | 8 letters | vitality |
| Robustness | 8 letters | solidity |
| Robustness | 9 letters | hardiness |
| Robustness | 9 letters | wholeness |
| Robustness | 9 letters | stoutness |
| Robustness | 9 letters | toughness |
| Robustness | 10 letters | sturdiness |
| Robustness | 13 letters | staying-power |
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