| Solution | Length | |
|---|---|---|
| 3 letters | ||
| yup | 3 | |
| yep | 3 | |
| aye | 3 | |
| vow | 3 | |
| say | 3 | |
| put | 3 | |
| 4 letters | ||
| ayes | 4 | |
| yeah | 4 | |
| yeas | 4 | |
| avow | 4 | |
| tell | 4 | |
| sign | 4 | |
| aver | 4 | |
| urge | 4 | |
| seal | 4 | |
| 5 letters | ||
| yeses | 5 | |
| posit | 5 | |
| swear | 5 | |
| stand | 5 | |
| state | 5 | |
| speak | 5 | |
| vouch | 5 | |
| quote | 5 | |
| prove | 5 | |
| utter | 5 | |
| 6 letters | ||
| depose | 6 | |
| attest | 6 | |
| assent | 6 | |
| yesses | 6 | |
| assert | 6 | |
| report | 6 | |
| settle | 6 | |
| uphold | 6 | |
| submit | 6 | |
| avouch | 6 | |
| relate | 6 | |
| ratify | 6 | |
| second | 6 | |
| recite | 6 | |
| verify | 6 | |
| 7 letters | ||
| probate | 7 | |
| warrant | 7 | |
| profess | 7 | |
| witness | 7 | |
| support | 7 | |
| protest | 7 | |
| testify | 7 | |
| endorse | 7 | |
| sustain | 7 | |
| declare | 7 | |
| swearto | 7 | |
| 8 letters | ||
| maintain | 8 | |
| stand on | 8 | |
| sanction | 8 | |
| set down | 8 | |
| swear to | 8 | |
| validate | 8 | |
| proclaim | 8 | |
| propound | 8 | |
| SPEAK UP | 8 | |
| 9 letters | ||
| reinforce | 9 | |
| pronounce | 9 | |
| predicate | 9 | |
| undergird | 9 | |
| stand for | 9 | |
| undersign | 9 | |
| 10 letters | ||
| UNDERWRITE | 10 | |
| asseverate | 10 | |
| strengthen | 10 | |
| articulate | 10 | |
| speak out | 10 | |
| 11 letters | ||
| expostulate | 11 | |
| 12 letters | ||
| substantiate | 12 | |
| subscribe-to | 12 | |
| RUBBER STAMP | 12 | |