| defend(verb, maintain, approve, uphold, protect) |
| determine(verb, certainty) |
| provide(verb, secure, confirm, guarantee, safeguard) |
| reassure(verb, support, maintain, secure, protect) |
| check(verb, validate, insure) |
| affirm(verb, support, maintain, secure, declare) |
| effect(verb, secure, confirm, guarantee, safeguard) |
| make safe(verb, expression, idiom, secure, confirm) |
| nail down(verb, expression, phrasal verb, secure, confirm) |
| settle(verb, guarantee) |
| underwrite(verb, agree, declare, approve, uphold) |
| control |
| back(verb, support, maintain, secure, approve) |
| cinch(verb, phrasal verb, secure, informal, confirm) |
| endorse(verb, support, maintain, secure, approve) |
| ratify(verb, settle, guarantee) |
| seal(verb, secure, settle, confirm, verify) |
| stand behind(verb, expression, support, maintain, secure) |
| verify(verb, validate, insure) |
| vouch(verb, declare, commit, undertake, affirm) |