ROGET THESAURUS
Nill
Unwillingness
VB
be unwilling, nill, dislike, grudge, begrudge, not be able to find it in one's heart to, not have the stomach to, demur, stick at, scruple, stickle, hang fire, run rusty, recoil, shrink, swerve, hesitate, avoid, oppose, dissent, refuse.
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.