disprove Antonyms

prove be responsible for support substantiate show reiterate ratify corroborate profess maintain justify insist guarantee swear testify attest to bear witness to provide evidence approve of be sure of agree on something bank on bear out witness verify validate uphold evidence endorse disculpate aver authenticate attest asseverate assert ascertain approve agree affirm adduce acknowledge avouch avow back determine denote demonstrate credit countersign confirm