" callousness "

1: as in insensitivity, heartlessness;

•  Synonyms : 

•  bloodlessness,

•  callosity,

•  coldness,

•  coolness,

•  halfheartedness,

•  hard-heartedness,

•  hardness,

•  heartlessness,

•  imperturbability,

•  insensitivity,

•  obduracy,

•  affectlessness,

•  apathy,

•  emotionlessness,

•  impassiveness,

•  impassivity,

•  insensibility,

•  numbness,

•  phlegm,

•  blankness,

•  deadness,

•  emptiness,

•  vacancy,

•  aloofness,

•  detachment,

•  indifference,

•  unconcern,

•  stiffness,

•  woodenness

•  Antonyms : 

•  emotion,

•  feeling,

•  sensibility,

•  compassion,

•  empathy,

•  pity,

•  sympathy,

•  receptiveness,

•  receptivity,

•  responsiveness,

•  sensitivity,

•  solicitude,

•  tenderness,

•  understanding,

•  warmth,

•  hand-wringing,

•  histrionics,

•  hysteria,

•  hysterics,

•  melodrama,

•  vehemence

1: having or showing a lack of sympathy or tender feelings;

  * e.g., " ... the callous comment It's just a fish, when the boy's pet died, made him cry "

•  Synonyms : 

•  affectless,

•  case-hardened,

•  cold-blooded,

•  compassionless,

•  desensitized,

•  hard,

•  hard-boiled,

•  hard-hearted,

•  heartless,

•  indurate,

•  inhuman,

•  inhumane,

•  insensate,

•  insensitive,

•  ironhearted,

•  merciless,

•  obdurate,

•  pachydermatous,

•  pitiless,

•  remorseless,

•  ruthless,

•  slash-and-burn,

•  soulless,

•  stony,

•  stonyhearted,

•  take-no-prisoners,

•  thick-skinned,

•  uncharitable,

•  unfeeling,

•  unmerciful,

•  unsparing,

•  unsympathetic

•  Antonyms : 

•  charitable,

•  compassionate,

•  humane,

•  kindhearted,

•  kindly,

•  merciful,

•  sensitive,

•  softhearted,

•  sympathetic,

•  tender,

•  tenderhearted,

•  warm,

•  warmhearted