| buy(verb, support, back, sign, uphold) |
| certify(verb, prove, verify, substantiate, validate) |
| check(verb, support, back, uphold, explain) |
| check out(verb, expression, prove, verify, validate) |
| confirm(verb, permit, prove, verify, substantiate) |
| double-check(verb, support, back, uphold, explain) |
| endorse(verb, support, back, sign, prove) |
| establish(verb, prove, validate, ratify) |
| give stamp of approval(expression, idiom, support, back, sign) |
| give the go-ahead(expression, idiom, support, back, sign) |
| give the nod(expression, idiom, support, back, sign) |
| lap up(expression, support, back, sign, uphold) |
| make sure(expression, support, back, sign, uphold) |
| okay(verb, support, back, sign, prove) |
| prove(verb, support, back, explain, verify) |
| ratify(verb, support, back, sign, prove) |
| rubber-stamp(verb, support, back, sign, permit) |
| sanction(verb, support, back, sign, uphold) |
| settle(verb, support, back, uphold, explain) |
| sign(verb, support, back, uphold, prove) |