| hock(verb, agree, declare, engage, contract) |
| insure(verb, agree, declare, commit, undertake) |
| live up to(verb, expression, idiom, phrasal verb, agree) |
| maintain(verb, assert, undertake, affirm, promise) |
| make an affidavit(verb, expression, idiom, assert, undertake) |
| obligate(verb, agree, declare, commit, undertake) |
| pledge oneself(verb, expression, idiom, assert, undertake) |
| profess(verb, declare, commit, undertake, affirm) |
| say so(verb, expression, agree, declare, assert) |
| secure(verb, agree, declare, commit, undertake) |
| state under oath(verb, expression, idiom, assert, undertake) |
| stipulate(verb, agree, declare, contract, commit) |
| string along(verb, expression, agree, declare, commit) |
| swear on bible(verb, expression, idiom, agree, declare) |
| swear to God(verb, expression, idiom, assert, undertake) |
| swear up and down(verb, expression, idiom, phrasal verb, agree) |
| take an oath(verb, expression, idiom, agree, declare) |
| testify(verb, declare, assert, undertake, affirm) |
| undertake(verb, agree, declare, engage, contract) |
| give word(verb, expression, engage, contract, promise) |