Here are some words to describe the lack of sensitivity: Insensitive: This is used to describe a person who does not react strongly or inappropriately to sensitive topics or events. Insensitivity: This word is used to describe the lack of interest or interest in sensitive things. 3. Indifference: This word is used to describe the lack of feeling or emotion in response to sensitive topics or events. Cold: This word is used to describe a cold, uninterested, or unconcerned attitude towards sensitive topics or events. Insensitive: This term is used to describe not being sensitive to sensitive things, not being alert, or reacting slowly. Calm: This word is used to describe a person who is calm, composed, and not easily angered or emotional about sensitive topics or events. Nervous system: This term is used to describe the reaction of the nervous system to sensitive topics or events without being overly stimulated or affected.