in·sen·si·tive 
(ĭn-sĕnsĭ-tĭv)
(ĭn-sĕnsĭ-tĭv)adj.
1. Not physically sensitive; numb.
2.
a. Lacking in sensitivity to the feelings or circumstances of others; unfeeling.
b. Indifferent or inattentive: insensitive to the needs of the customers.
3. Not readily responsive to external influence or stimulation: a commodity price that is insensitive to fluctuations in demand.
in·sensi·tive·ly adv.
in·sen′si·tivi·ty, in·sensi·tive·ness n.