| swear(verb, declare, approve, uphold, authorize) |
| promise(verb, give, approve, uphold, assert) |
| warrant(verb, agree, declare, approve, uphold) |
| assert(verb, approve, uphold, explain, require) |
| pledge(verb, agree, declare, approve, uphold) |
| undertake(verb, agree, declare, approve, uphold) |
| vow(verb, agree, declare, approve, uphold) |
| accede(verb, support, accept, agree, declare) |
| acknowledge(verb, support, agree, verbally) |
| affiance(verb, agree, declare, commit, undertake) |
| affirm(verb, declare, approve, uphold, assert) |
| agree(verb, support, accept, commit, undertake) |
| answer for(verb, expression, phrasal verb, agree, declare) |
| approve(verb, support, accept, agree, uphold) |
| argue(verb, approve, uphold, explain, require) |
| assent(verb, agree, declare, commit, undertake) |
| asservate(verb, agree, declare, commit, undertake) |
| asseverate |
| assure(verb, agree, declare, approve, uphold) |
| attest(verb, approve, uphold, assert, authorize) |