| Solution | Length | |
|---|---|---|
| 3 letters | ||
| dud | 3 | |
| 4 letters | ||
| weak | 4 | |
| weed | 4 | |
| void | 4 | |
| puny | 4 | |
| vain | 4 | |
| idle | 4 | |
| FuBe | 4 | |
| 5 letters | ||
| pants | 5 | |
| inept | 5 | |
| 6 letters | ||
| otiose | 6 | |
| futile | 6 | |
| nohelp | 6 | |
| nogood | 6 | |
| 7 letters | ||
| inutile | 7 | |
| sterile | 7 | |
| 8 letters | ||
| UNSTURDY | 8 | |
| unusable | 8 | |
| abortive | 8 | |
| 9 letters | ||
| unhelpful | 9 | |
| ofnoavail | 9 | |
| fruitless | 9 | |
| thankless | 9 | |
| WORTHLESS | 9 | |
| stillborn | 9 | |
| 10 letters | ||
| UNAVAILING | 10 | |
| UNWORKABLE | 10 | |
| PROFITLESS | 10 | |
| 11 letters | ||
| UNFAVORABLE | 11 | |
| UNFORTUNATE | 11 | |
| unnecessary | 11 | |
| UNREWARDING | 11 | |
| ineffectual | 11 | |
| unavailable | 11 | |
| INEFFECTIVE | 11 | |
| superfluous | 11 | |
| PURPOSELESS | 11 | |
| PREJUDICIAL | 11 | |
| 12 letters | ||
| UNPRODUCTIVE | 12 | |
| UNSUCCESSFUL | 12 | |
| unprofitable | 12 | |
| 13 letters | ||
| UNSERVICEABLE | 13 | |
| INEFFICACIOUS | 13 | |