#refusal  the act of refusing
  supertype:  denial  the act of refusing a request; "it resulted in a complete denial of his privileges"
  subtype:  prohibition  refusal to approve or assent to
     subtype:  interdiction  authoritative prohibition
     subtype:  banning__ban__forbiddance__forbidding  an official prohibition or edict against something
        subtype:  test_ban  a ban on the testing of nuclear weapons that is mutually agreed to by countries that possess nuclear weapons

No statement uses or specializes refusal; click here to add one.