What does desensitize mean?
Desensitize is a transitive verb meaning to make a person, animal, or biological system less sensitive or responsive to a stimulus. It has three main domains of use. In everyday and critical contexts, it describes how repeated exposure to distressing things — violence, tragedy, graphic imagery — gradually dulls an individual's emotional reaction, often with an implied negative judgment about lost empathy. In clinical psychology, it names a deliberate therapeutic process: systematic desensitization exposes a patient incrementally to a feared object or situation until anxiety diminishes. In physiology and pharmacology, it refers to reduced responsiveness of receptors, cells, or organisms after continued stimulation. The word derives from Latin 'sensus' (sense) via 'sensitive,' combined with the prefix 'de-' (removal) and the suffix '-ize.' Common derivatives include desensitization, desensitized, and desensitizing. It pairs naturally with prepositions like 'to' and adverbs like 'gradually' or 'increasingly.' Its British spelling is desensitise.
To make someone less sensitive or less emotionally responsive to something, typically through repeated exposure to a distressing or stimulating experience.
"Decades of violent video games have not necessarily desensitized players to real-world aggression, though the debate continues."
Often used in the passive construction 'be/become desensitized to'; carries a negative connotation when referring to emotional numbness toward suffering.
(Medicine/Psychology) To reduce a person's adverse reaction to a stimulus through controlled, incremental exposure; used in treating phobias and allergies.
"Allergy specialists may desensitize patients by administering gradually increasing doses of the offending substance over months."
In allergy treatment this process is also called immunotherapy or hyposensitization.
(Physiology/Pharmacology) To reduce the responsiveness of a cell, receptor, or organism to a stimulus following prolonged or repeated exposure.
"Continuous agonist exposure can desensitize beta-adrenergic receptors, diminishing their response over time."
Commonly called tachyphylaxis in pharmacological literature when referring to rapid onset of diminished response.
The same word psychologists use to help people conquer phobias is what critics blame for making us numb to violence on screen — desensitize cuts both ways.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of desensitize
Desensitize combines three elements: the prefix 'de-' (from Latin, indicating removal or reversal), the root 'sensitive,' from Latin 'sensus' meaning 'sense' or 'perception' (from the verb 'sentire,' to feel), and the suffix '-ize,' from Greek '-izein,' used to form verbs. The word therefore literally means 'to remove sensitivity.' It emerged in English in the late 19th century, first appearing in medical and physiological contexts before expanding into psychological usage in the early 20th century alongside behavioral therapy techniques such as systematic desensitization. Cognates sharing the same Latin root include sensitive, sensory, sensible, insensible, and sentiment.
Related word forms
How desensitize is actually used
Register: neutral-to-formal; common in psychology, medicine, media criticism, and social commentary. Often carries a mildly negative connotation when describing emotional numbing toward violence or suffering. The British spelling 'desensitise' (-ise ending) is standard in UK English. Frequently used in the passive form 'be/become desensitized to something.'
Easily confused with desensitize
'Desensitise' is simply the British spelling of the same verb; the meaning is identical — only the spelling differs by region.
'Anesthetize' means to induce loss of sensation through anesthesia (typically medical and physical), whereas 'desensitize' refers more broadly to reducing emotional, psychological, or physiological responsiveness over time.