rebut Antonyms

announce one's support for back up deliver the goods witness verify validate support substantiate show shew sanction reiterate see eye to eye come up with the goods allow us advocate for come under attack act up to a promise accomplish a promise keep one's promise keep a promise agree on agree on something admit defeat unopposed reconfirm reaffirm prove approve allow agree affirm admit acquiesce acknowledge accredit accept accede abdicate attest authenticate profess evidence establish demonstrate corroborate confirm concede certify avow