c. 1600, "having little or no reaction to what is perceived by one's senses," from in- (1) "not, opposite of" + sensitive. For sense, see insensate. From 1834 as "having little or no mental or moral sensitiveness;" meaning "without consideration for the feelings of others" attested by 1974. Related: Insensitively.
insensitive to radiation
insensitive to the needs of the patients
insensate
insense
insensibility
insensible
insensibly
insensitive
insensuous
inseparability
inseparable
insert
insertion
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