| Solution | Length | |
|---|---|---|
| 4 letters | ||
| mule | 4 | |
| 5 letters | ||
| stone | 5 | |
| trait | 5 | |
| sulks | 5 | |
| rigor | 5 | |
| 7 letters | ||
| refusal | 7 | |
| stamina | 7 | |
| purpose | 7 | |
| 8 letters | ||
| obduracy | 8 | |
| SLOWNESS | 8 | |
| adamancy | 8 | |
| vitality | 8 | |
| strength | 8 | |
| tenacity | 8 | |
| rigidity | 8 | |
| 9 letters | ||
| obstinacy | 9 | |
| TIGHTNESS | 9 | |
| TOUGHNESS | 9 | |
| RENITENCY | 9 | |
| viscosity | 9 | |
| retention | 9 | |
| stability | 9 | |
| stiffness | 9 | |
| 10 letters | ||
| resistance | 10 | |
| unruliness | 10 | |
| OBSTINANCE | 10 | |
| resolution | 10 | |
| RELUCTANCE | 10 | |
| repugnance | 10 | |
| 11 letters | ||
| PERTINACITY | 11 | |
| 12 letters | ||
| INEFFICIENCY | 12 | |
| 13 letters | ||
| intransigence | 13 | |
| staying-power | 13 | |
| recalcitrance | 13 | |
| PREOCCUPATION | 13 | |
| pigheadedness | 13 | |
| 14 letters | ||
| REBELLIOUSNESS | 14 | |
| relentlessness | 14 | |
| pig-headedness | 14 | |