defy, resist, refuse -- (elude, especially in a baffling way; "This behavior defies explanation")
deny, refuse -- (refuse to let have; "She denies me every pleasure"; "he denies her her weekly allowance")
resist, reject, refuse -- (resist immunologically the introduction of some foreign tissue or organ; "His body rejected the liver of the donor")
reject, turn down, turn away, refuse -- (refuse entrance or membership; "They turned away hundreds of fans"; "Black people were often rejected by country clubs")