THESAURUS
Deny
abandon, abjure, abstain, answer, answer conclusively, argue down, assert the contrary, avoid, back down, back out, backwater, ban, bar, be contrary to, begrudge, belie, brush aside, call into question, challenge, chuck, chuck out, climb down, close the hand, confound, confute, constrain, contemn, contest, contradict, contravene, controvert, counter, crawfish out, cross, crush, curb, debar, decline, defeat, demolish, desert, despise, disaffirm, disallow, disapprove, disavow, disbelieve, discard, disclaim, discount, discredit, disdain, dismiss, disown, dispose of, disprove, dispute, disregard, eat crow, eat humble pie, embargo, enjoin, eschew, except, exclude, exclude from, finish, floor, forbear, forbid, forgo, forsake, forswear, gag on, gainsay, grudge, hold back, ignore, impugn, inhibit, interdict, join issue upon, keep back, misbelieve, negate, negative, nonplus, not accept, not admit, not believe, not buy, not swallow, nullify, oppose, oppugn, outlaw, overthrow, overturn, overwhelm, parry, pass by, pass up, preclude, prevent, prohibit, proscribe, push aside, put to silence, rebuff, rebut, recall, recant, reduce to silence, refrain, refuse, refuse to admit, refuse to consider, refuse to credit, refute, reject, renege, renounce, repel, repress, repudiate, repulse, restrain, retract, revoke, rule out, sacrifice, say no to, scout, settle, shove away, shun, shut out, shut up, silence, smash all opposition, spurn, squash, squelch, subvert, suppress, swallow, taboo, take back, take issue with, throw away, throw out, traverse, turn away, turn down, turn out, unbelieve, undermine, unsay, upset, waive, withdraw, withhold
ROGET THESAURUS
Deny
Resignation
VB
resign, give up, throw up, lay down, throw up the cards, wash one's hands of, abjure, renounce, forego, disclaim, retract, deny, abrogate, desert, get rid of, abdicate, vacate, vacate one's seat, accept the stewardship of the Chiltern Hundreds, retire, tender one's resignation.
Refusal
VB
refuse, reject, deny, decline, turn down, nill, negative, refuse one's assent, withhold one's assent, shake the head, close the hand, close the purse, grudge, begrudge, be slow to, hang fire, pass (at cards), be deaf to, dismiss, turn a deaf ear to, turn one's back upon, set one's face against, discountenance, not hear of, have nothing to do with, wash one's hands of, stand aloof, forswear, set aside, cast behind one, not yield an inch, resist, cross, not grant, repel, repulse, shut the door in one's face, slam the door in one's face, rebuff, send back, send to the right about, send away with a flea in the ear, deny oneself, not be at home to, discard, spurn, rescind, disclaim, protest, dissent.
Doubt
VB
disbelieve, discredit, not believe, misbelieve, refuse to admit, refuse to believe, doubt, be doubtful, doubt the truth of, be skeptical as to, diffide, distrust, mistrust, suspect, smoke, scent, smell a rat, have doubts, harbor doubts, entertain doubts, suspicions, have one's doubts, demure, stick at, pause, hesitate, scruple, stop to consider, waver, hang in suspense, hang in doubt, throw doubt upon, raise a question, bring in, call in question, question, challenge, dispute, deny, cavil, cause a doubt, raise a doubt, start a doubt, suggest a doubt, awake a doubt, make suspicion, ergotize, startle, stagger, shake one's faith, shake one's belief, stagger one's faith, stagger one's belief.
Negation
VB
deny, contradict, contravene, controvert, give denial to, gainsay, negative, shake the head, disown, disaffirm, disclaim, disavow, recant, revoke, dispute, impugn, traverse, rebut, join issue upon, bring in question, call in question, give the lie in his throat, give one the lie in his throat, deny flatly, deny peremptorily, deny emphatically, deny absolutely, deny wholly, deny entirely, give the lie to, belie, repudiate, set aside, ignore, rebut, qualify, refuse, recuse.