| Solution | Length | |
|---|---|---|
| 4 letters | ||
| naff | 4 | |
| wild | 4 | |
| blah | 4 | |
| slow | 4 | |
| dull | 4 | |
| flat | 4 | |
| thin | 4 | |
| rude | 4 | |
| weak | 4 | |
| 5 letters | ||
| stiff | 5 | |
| stale | 5 | |
| vapid | 5 | |
| crude | 5 | |
| bland | 5 | |
| tacky | 5 | |
| pulpy | 5 | |
| prosy | 5 | |
| crass | 5 | |
| 6 letters | ||
| vulgar | 6 | |
| tawdry | 6 | |
| tootoo | 6 | |
| stupid | 6 | |
| wooden | 6 | |
| stuffy | 6 | |
| trashy | 6 | |
| stodgy | 6 | |
| solemn | 6 | |
| watery | 6 | |
| 7 letters | ||
| sterile | 7 | |
| insulse | 7 | |
| insipid | 7 | |
| uncouth | 7 | |
| SAPLESS | 7 | |
| tedious | 7 | |
| 8 letters | ||
| UNSAVORY | 8 | |
| lifeless | 8 | |
| unseemly | 8 | |
| 9 letters | ||
| inelegant | 9 | |
| spiceless | 9 | |
| unrefined | 9 | |
| savorless | 9 | |
| 10 letters | ||
| UNPOLISHED | 10 | |
| ungraceful | 10 | |
| unsuitable | 10 | |
| unflavored | 10 | |
| unbecoming | 10 | |
| spiritless | 10 | |
| FLAVORLESS | 10 | |
| 11 letters | ||
| undignified | 11 | |
| UNPALATABLE | 11 | |
| superficial | 11 | |
| wishy-washy | 11 | |
| 12 letters | ||
| uneuphonious | 12 | |
| watered down | 12 | |
| unappetizing | 12 | |
| unacceptable | 12 | |
| 13 letters | ||
| uninteresting | 13 | |
| CHARACTERLESS | 13 | |