Adjective
  1. lacking sensation;

    "my foot is asleep" "numb with cold"

  2. (followed by `to') not showing human feeling or sensitivity; unresponsive;

    "passersby were dead to our plea for help" "numb to the cries for mercy"

  3. so frightened as to be unable to move; stunned or paralyzed with terror; petrified;

    "too numb with fear to move"