1. (a.) Destitute of feeling; void of sensibility; insensible; insensate.

2. (a.) Without kind feelings; cruel; hard-hearted.

abiotic affectless analgesia anesthesia anesthetized arctic asleep autistic azoic benumbed blunt bowelless brutal callosity callous calloused callousness cantankerous catatonic chill chilly churlish cold cold as charity cold of heart cold-blooded coldblooded coldbloodedness coldhearted coldheartedness coldness cool crotchety cruel dead deadened deadness dispassionate dog-eat-dog drugged dull dullness dumb electronarcosis emotionally dead emotionless exacting exanimate flinthearted flinty frigid frosted frosty frozen hard hard of heart hard-boiled hardened hardhearted hardheartedness hardness hardness of heart harsh heart of stone heartless heartlessness icy immovable impassibility impassible impassive imperception imperceptive imperceptiveness imperceptivity impercipience impercipient inanimate inanimated inclement inconsiderateness indurated inert inexcitable inexorable insensate insensibility insensible insensibleness insensitive insensitiveness insensitivity insentience insentient insusceptible ironhearted lifeless marblehearted merciless mute narcosis narcotization nonconscious nonemotional nonliving numb numbed numbness obduracy obdurate objective obtuse obtuseness out of touch passionless pins and needles pitiless pitilessness relentless remorseless ruthless self-absorbed senseless severe soulless spiritless stony stonyhearted surly thick skin thick-skinned thick-witted tough unaffectionate unamiable unanimated uncompassionate uncompassioned unconscious uncordial unemotional unfeelingness unfelt unforgiving unimpassioned unimpressionable unkind unloving unmerciful unmercifulness unnatural unnaturalness unpassionate unperceptive unperceptiveness unpitiful unpitying unremorseful unresponding unresponsive unresponsiveness unsusceptible unsympathetic unsympathizing untouchable unyielding without mercy