insensitivity

/ɪnˌsɛnsɪˈtɪvɪti/
noun
  1. Lack of awareness or concern for other people's feelings; the quality of being unkind or not caring about how others feel.
    • She apologized for her insensitivity after realizing how her words had hurt her friend.
    • The manager's insensitivity during the meeting offended several team members.
    • His insensitivity to her grief made the situation even worse.
  2. Lack of physical reaction or response to something, such as pain, touch, or temperature.
    • After the accident, he experienced temporary insensitivity in his fingertips.
    • The patient's insensitivity to pain in his left foot worried the doctor.
    • Nerve damage can cause insensitivity to heat or cold in the affected area.
  3. Lack of response to a substance, such as a drug or allergen; resistance or immunity.
    • The test revealed an insensitivity to the pollen, so allergies were ruled out.
    • The bacteria showed insensitivity to the antibiotic, making the infection hard to treat.
    • Some people develop insensitivity to certain medications after long-term use.