THESAURUS
Assert
advance, advocate, affirm, allege, allege in support, announce, annunciate, answer, argue, argue for, assever, asseverate, aver, avouch, avow, brook no denial, champion, confess, contend, contend for, counter, declare, defend, enunciate, espouse, express, express the belief, have, hold, insist, insist on, insist upon, issue a manifesto, lay down, maintain, make a plea, manifesto, nuncupate, persist, plead for, pose, posit, postulate, predicate, press, proclaim, profess, pronounce, propose, propound, protest, put, put it, quote, rebut, recite, refute, relate, reply, respond, riposte, say, say in defense, set down, set forth, speak, speak for, speak out, speak up, speak up for, stand for, stand on, stand up for, state, stick to, stick up for, submit, support, sustain, swear, take no denial, uphold, urge, urge reasons for, vow, warrant
ROGET THESAURUS
Assert
Dueness
VB
be due, to, be the due, of, have right to, have title to, have claim to, be entitled to, have a claim upon, belong to, deserve, merit, be worthy of, richly deserve, demand, claim, call upon for, come upon for, appeal to for, revendicate, reclaim, exact, insist on, insist upon, challenge, take one's stand, make a point of, require, lay claim to, assert, assume, arrogate, make good, substantiate, vindicate a claim, vindicate a right, fit for, qualify for, make out a case, give a right, confer a right, entitle, authorize, sanctify, legalize, ordain, prescribe, allot, give every one his due, pay one's dues, have one's due, have one's rights, use a right, assert, enforce, put in force, lay under contribution,
be due, to, be the due, of, have right to, have title to, have claim to, be entitled to, have a claim upon, belong to, deserve, merit, be worthy of, richly deserve, demand, claim, call upon for, come upon for, appeal to for, revendicate, reclaim, exact, insist on, insist upon, challenge, take one's stand, make a point of, require, lay claim to, assert, assume, arrogate, make good, substantiate, vindicate a claim, vindicate a right, fit for, qualify for, make out a case, give a right, confer a right, entitle, authorize, sanctify, legalize, ordain, prescribe, allot, give every one his due, pay one's dues, have one's due, have one's rights, use a right, assert, enforce, put in force, lay under contribution.
Affirmation
VB
assert, make an assertion, have one's say, say, affirm, predicate, declare, state, protest, profess, put forth, put forward, advance, allege, propose, propound, enunciate, broach, set forth, hold out, maintain, contend, pronounce, pretend, depose, depone, aver, avow, avouch, asseverate, swear, make oath, take one's oath, make an affidavit, swear an affidavit, put in an affidavit, take one's Bible oath, kiss the book, vow, vitam impendere vero, swear till one is black in the face, swear till one is blue in the face, swear till all's blue, be sworn, call Heaven to witness, vouch, warrant, certify, assure, swear by bell book and candle, swear by, insist upon, take one's stand upon, emphasize, lay stress on, assert roundly, assert positively, lay down, lay down the law, raise one's voice, dogmatize, have the last word, rap out, repeat, reassert, reaffirm, announce, acknowledge, attest, adjure.