证实：verify, prove, substantiate, corroborate, confirm
反驳：refute, disprove, controvert, contradict
支持(认可): endorse, support, encourage, reinforce, countenance, approve
反对(抗议)：oppose, demur, deprecate, quibble, defy
肯定， 断言：aver, assert, affirm, proclaim
否定：deny, gainsay, repudiate, disclaim, negate