'insensitivity' originates from the Latin word 'insensibilis,' where 'in-' meant 'not' and 'sensibilis' meant 'sensitive.'

'insensibilis' transformed into the Old French word 'insensible,' and eventually became the modern English word 'insensitive' through Middle English.

Initially, it meant 'not sensitive,' and over time it evolved into its current meaning of 'lack of concern for others' feelings.'