| sign off on(verb, expression, idiom, phrasal verb, support) |
| subscribe(verb, support, agree, back, sign) |
| substantiate(verb, support, maintain, back, declare) |
| swear up and down(verb, expression, idiom, phrasal verb, support) |
| testify(verb, support, state, maintain, back) |
| thumbs up(verb, expression, phrasal verb, support, agree) |
| uphold(verb, support, maintain, favor, back) |
| verify(verb, support, state, maintain, back) |
| vouch(verb, support, state, give, maintain) |
| warrant(verb, support, maintain, praise, favor) |
| witness(verb, support, state, maintain, praise) |
| John Hancock(expression, endorse, prove, substantiate, validate) |
| accede(verb, support, take, agree, sign) |
| accredit(verb, support, state, praise, pass) |
| acknowledge(verb, state, agree, sign, assume) |
| acquiesce(verb, support, take, agree, sign) |
| act as a witness(verb, expression, idiom, support, maintain) |
| admit(verb, sign, assume, consenting) |
| adopt(verb, agree, sign, acknowledge, assume) |
| advocate(verb, support, take, praise, favor) |