insensitive

Not physically sensitive; numb.

Lacking in sensitivity to the feelings or circumstances of others; unfeeling.

Indifferent or inattentive.

Not readily responsive to external influence or stimulation.

Not sensitive; having little or no sensibility.

Not sensitive; wanting sensation, or wanting acute sensibility.

Not having normal physical feeling

Not having normal emotional feelings, cold, tactless, undiplomatic

not responsive to physical stimuli