Antonyms for the phrase renders void include validates, confirms, approves, endorses, and approves. These words suggest that a declaration or action has been accepted and supported rather than nullified or canceled. Validates, confirms, and approves indicate that a situation or decision has been authenticated and held up. Endorses implies an authoritative and formal confirmation, while affirm affirms something to be true or genuine. The antonyms for renders void showcase a sense of assent, agreement, and conformity that is distinct from the negative and dismissive overtones of the phrase renders void.