adjective.
Not having normal emotional feelings, cold, tactless, undiplomatic
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
not responsive to physical stimuli
adjective.
deficient in human sensibility; not mentally or morally sensitive
Word Usage
"The reason I call it insensitive is because I believe that characteristics like intelligence are amorphous and that these characteristics go into making up our sense of self-hood."