uncompassionate

adjectives

lacking compassion or feeling for others
"nor silver-shedding tears could penetrate her uncompassionate sire"- Shakespeare
uncompassionate
antonym
compassionate
is similar to
devoid of feeling for others
"an unfeeling wretch"
hardhearted, stonyhearted, unfeeling
see also
having or showing no mercy
"the merciless enemy"; "a merciless critic"; "gave him a merciless beating"
merciless, unmerciful
see also
not sympathetic or disposed toward
"unsympathetic officialdom"; "people unsympathetic to the revolution"; "his dignity made him seem aloof and unsympathetic"
unsympathetic