| secure(verb, declare, commit, undertake, affirm) |
| undertake(verb, catch, declare, engage, contract) |
| assent(noun, verb, declare, commit, undertake) |
| engage(verb, pass, declare, contract, commit) |
| agree(verb, pass, allow, catch, admit) |
| cross heart(verb, expression, state, maintain, agree) |
| plight(verb, declare, assert, engage, contract) |
| say so(verb, expression, state, give, maintain) |
| stipulate(verb, declare, commit, undertake, affirm) |
| subscribe(verb, support, back, declare, sign) |
| swear on bible(expression, idiom, state, maintain, agree) |
| swear up and down(verb, expression, idiom, state, give) |
| underwrite(verb, declare, commit, undertake, affirm) |
| vouchsafe(verb, promise, swear) |
| affiance(verb, pass, catch, declare, commit) |
| answer for(verb, expression, support, give, maintain) |
| asservate(verb, state, maintain, declare, tell) |
| betroth(verb, pass, catch, declare, commit) |
| bind(verb, pass, declare, commit, undertake) |
| contract(verb, declare, engage, commit, undertake) |