What does insensitive mean?
Insensitive means lacking sensitivity, and its meaning depends partly on context. Medically or scientifically, an insensitive person or mechanism does not respond to pain, touch, sound, or another stimulus. In everyday social use, an insensitive remark or action shows indifference to other people's feelings, needs, or circumstances, and is therefore considered tactless or inconsiderate. The word is related to sensitive, but carries a stronger negative implication when applied to conduct. It is useful because it connects a broad idea of lacking response with a specific modern concern about thoughtlessness and lack of empathy. For example, someone may describe a material as insensitive to temperature, while describing a comment as insensitive because it fails to acknowledge someone else's situation.
Not affected or responsive to physical stimuli, pain, or emotional impressions.
"The patient was insensitive to pressure on the injured arm."
In medical and scientific contexts, this sense is neutral and describes a lack of physiological response.
Tactless, unkind, or indifferent to the feelings and circumstances of others.
"It was insensitive to interrupt the speaker without acknowledging her point."
This figurative sense is evaluative and commonly expresses disapproval of socially thoughtless behaviour or speech.
A word can be insensitive in two strikingly different ways: unable to feel pain, or unwilling to consider other people's feelings.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of insensitive
Insensitive was formed in the 17th century from the Latin prefix in-, meaning 'not' or 'without,' and sensitive, from Latin sensitivus, ultimately related to sentire, 'to perceive' or 'to feel.' The word originally developed in contexts involving lack of feeling or physical response. Its later figurative use for lack of social awareness is well established in English, especially in the 19th and 20th centuries. Many related English words, including sensation, sensor, and sensate, trace to the same Latin root.
Related word forms
How insensitive is actually used
In its social sense, insensitive is often critical: it describes behaviour or remarks that are tactless, unkind, or disregardful of other people's experiences. In scientific and medical contexts, it more often means lacking a response to stimuli.
Easily confused with insensitive
Insensitive generally means lacking emotional awareness or being tactless, whereas insensible more often means unconscious or lacking physical sensation.