| Solution | Length | |
|---|---|---|
| 4 letters | ||
| knee | 4 | |
| hale | 4 | |
| rude | 4 | |
| spry | 4 | |
| 5 letters | ||
| hyper | 5 | |
| manic | 5 | |
| vital | 5 | |
| zingy | 5 | |
| stout | 5 | |
| 6 letters | ||
| robust | 6 | |
| strong | 6 | |
| snappy | 6 | |
| rugged | 6 | |
| steely | 6 | |
| sturdy | 6 | |
| 7 letters | ||
| echoing | 7 | |
| 8 letters | ||
| stalwart | 8 | |
| puissant | 8 | |
| smacking | 8 | |
| spanking | 8 | |
| spirited | 8 | |
| vaulting | 8 | |
| vigorous | 8 | |
| 9 letters | ||
| delirious | 9 | |
| vivacious | 9 | |
| resilient | 9 | |
| saltatory | 9 | |
| sprightly | 9 | |
| strapping | 9 | |
| 11 letters | ||
| red-blooded | 11 | |
| quicksilver | 11 | |
| hyperactive | 11 | |
| ricocheting | 11 | |
| 12 letters | ||
| repercussive | 12 | |
| recalcitrant | 12 | |
| steeplechase | 12 | |
| 13 letters | ||
| strong willed | 13 | |
| 16 letters | ||
| well-conditioned | 16 | |