Pronunciation: (in-sen'si-tiv), [key]
1. deficient in human sensibility, acuteness of feeling, or consideration; unfeeling; callous: an insensitive person.
2. not physically sensitive: insensitive skin.
3. not affected by physical or chemical agencies or influences: insensitive to light.
4. not readily responsive or aware: insensitive to the needs of the peasants.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.