| affirm(verb, support, state, maintain, agree) |
| assert(verb, support, state, maintain, favor) |
| attest(verb, state, maintain, declare, confirm) |
| aver(verb, state, maintain, agree, allow) |
| avow(verb, support, state, maintain, agree) |
| confirm(verb, support, state, maintain, agree) |
| cross heart(verb, expression, state, maintain, agree) |
| declare(verb, support, state, maintain, agree) |
| depose(verb, state, agree, allow, declare) |
| guarantee(verb, support, state, maintain, favor) |
| maintain(verb, support, state, favor, agree) |
| profess(verb, support, state, maintain, agree) |
| state(verb, maintain, agree, allow, declare) |
| swear(verb, state, maintain, declare, confirm) |
| swear on bible(verb, expression, idiom, state, maintain) |
| swear up and down(verb, expression, idiom, phrasal verb, support) |
| testify(verb, support, state, maintain, back) |
| vouch(verb, state, give, maintain, agree) |
| warrant(noun, verb, support, state, control) |
| accede(verb, agree, declare, commit, undertake) |