不知痛癢 bù zhī tòng yǎng

DEFINITIONS

  1. numb
  2. unfeeling
  3. indifferent
  4. inconsequential

CHARACTERS

不 bù no, not; un-; negative prefix
知 zhī know, perceive, comprehend
痛 tòng pain, ache; sorry, sad; bitter
癢 yǎng itch