unfeeling
adjective
my mother is a cold, unfeeling, and unresponsive woman:
uncaring, unsympathetic, unemotional, unfriendly, uncharitable;
hard-hearted, stony-hearted, with a heart of stone, heartless, hard, harsh, austere, cold, cold-blooded, cold-hearted, callous, cruel, severe, pitiless, ruthless, unforgiving, unpitying, inhumane, brutal, sadistic, inhuman;
informal hard-boiled, hard-nosed, thick-skinned.
▷antonyms sympathetic, compassionate.
unfeeling Oxford Dictionary of English