| affirm(verb, declare, assert, commit, undertake) |
| agree(verb, contract, commit, undertake, assure) |
| answer for(verb, expression, agree, declare, commit) |
| assent(verb, agree, declare, commit, undertake) |
| assert(verb, undertake, affirm, promise, pledge) |
| asservate(verb, agree, declare, commit, undertake) |
| attest(verb, assert, undertake, affirm, promise) |
| avow(verb, assert, undertake, affirm, promise) |
| bargain(noun, verb, state, position, agree) |
| commit(verb, agree, declare, undertake, affirm) |
| compact(noun, verb, agree, declare, agreement) |
| consent(noun, verb, agree, declare, agreement) |
| cross heart(verb, expression, agree, declare, commit) |
| declare(verb, commit, undertake, affirm, promise) |
| depend on(verb, expression, phrasal verb, assert, undertake) |
| depose(verb, assert, undertake, affirm, promise) |
| ensure(verb, agree, declare, commit, undertake) |
| espouse(verb, agree, declare, commit, undertake) |
| give witness(verb, expression, assert, undertake, affirm) |
| have confidence in(verb, expression, idiom, phrasal verb, assert) |