balk (at), decline, disapprove, negative, nix, pass, pass up, refuse, reject, reprobate, repudiate, spurn, throw out, throw over, turn down

blow off, disdain, rebuff, scorn, scout, shoot downoverrule, vetoforbid, prohibit, proscribedismiss, ignoreabstain (from), forbear, refrain (from)deny, disavow, disclaim, dispute, gainsaystickabjure, forswear(also foreswear), recant, renounce, retract, take back, unsay, withdrawavoid, bypass, detourcontradict, deny, disown, negatecontrovert, disagree (with), disprove, dispute, rebut, refuteback down, back off, backtrackdisallow, recall, renege, revoke

turn one's back on