uncompassionate

1. Lacking compassion or feeling for others (synset 300508965)
   "nor silver-shedding tears could penetrate her uncompassionate sire"
   also:

   • merciless, unmerciful - having or showing no mercy
   • unsympathetic - not sympathetic or disposed toward
   similar to: hardhearted, stonyhearted, unfeeling - devoid of feeling for others

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