| cross heart(verb, expression, agree, declare, commit) |
| declare(verb, commit, undertake, affirm, assure) |
| ensure(verb, agree, declare, commit, undertake) |
| espouse(verb, agree, declare, commit, undertake) |
| guarantee(verb, pass, agree, catch, declare) |
| hock(verb, agree, declare, commit, undertake) |
| insure(verb, agree, declare, commit, undertake) |
| live up to(verb, expression, idiom, agree, declare) |
| mortgage(verb, agree, declare, commit, undertake) |
| pass(verb, agree, catch, declare, commit) |
| pawn(verb, agree, declare, commit, undertake) |
| plight(verb, agree, declare, commit, undertake) |
| say so(verb, expression, agree, declare, commit) |
| secure(verb, agree, declare, commit, undertake) |
| string along(verb, expression, agree, declare, commit) |
| subscribe(verb, agree, declare, commit, undertake) |
| swear on bible(verb, expression, idiom, agree, declare) |
| swear up and down(verb, expression, idiom, agree, declare) |
| take an oath(verb, expression, idiom, agree, declare) |
| underwrite(verb, agree, declare, commit, undertake) |