Synonyms and related words :
acknowledge, admit, affirm, allege, announce, annunciate, argue, assert, assever, asseverate, assure, attest, aver, avow, bear witness, certify, confess, confirm, contend, corroborate, countersign, declare, depone, depose, disclose, enunciate, express, express the belief, give evidence, guarantee, have, hold, insist, issue a manifesto, lay down, maintain, make a promise, manifesto, own, pledge, plight, predicate, proclaim, profess, promise, pronounce, protest, put, put it, say, set down, speak, speak out, speak up, stand for, stand on, state, submit, swear, testify, troth, underwrite, vouch, vow, warrant, witness