| evidence(verb, support, maintain, secure, protect) |
| ice(verb, informal, certain, verify, ensure) |
| indemnify(verb, cover, protect, answer, insure) |
| maintain(verb, support, secure, back, declare) |
| nail down(verb, expression, phrasal verb, secure, establish) |
| protect(verb, support, cover, keep, maintain) |
| sign for(expression, support, maintain, secure, back) |
| soothe(verb, calm, encourage, relax, comfort) |
| stand up for(expression, idiom, support, maintain, secure) |
| stipulate(verb, agree, declare, approve, uphold) |
| substantiate(verb, support, maintain, back, declare) |
| answer for(verb, expression, support, maintain, secure) |
| anticipate |
| approve(verb, state, confirm, uphold, authorize) |
| assent(noun, verb, agree, declare, commit) |
| assurance |
| augur well(expression, idiom, hope) |
| authenticate(state, settle, confirm, verify, guarantee) |
| avow(verb, support, state, maintain, back) |
| bag(verb, informal, promise, guarantee, pledge) |