| John Hancock(expression, endorse, prove, verify, substantiate) |
| act as a witness(verb, expression, idiom, support, maintain) |
| actualize(verb, idea, confirm, prove, affirm) |
| add(verb, support, increase, establish, extend) |
| add fuel to fire(verb, expression, idiom, support, increase) |
| add up(verb, expression, show, determine, confirm) |
| affirmation |
| allege |
| anneal(verb, support, increase, establish, extend) |
| announce(verb, state, show, declare, sign) |
| argue(verb, state, show, maintain, declare) |
| ascend(verb, support, increase, establish, extend) |
| ascertain(verb, state, show, determine, confirm) |
| asseverate(verb, support, maintain, back, declare) |
| authorize(verb, state, make, base, approve) |
| avert(verb, support, maintain, back, declare) |
| be behind(verb, expression, phrasal verb, approve, sanction) |
| be responsible for(verb, support, maintain, back, declare) |
| bear testimony(verb, expression, idiom, support, maintain) |
| bespeak(verb, state, show, declare, sign) |