" pitilessness "

1: as in obduracy, obdurateness;

•  Synonyms : 

•  callousness,

•  hard-heartedness,

•  implacability,

•  obduracy,

•  obdurateness,

•  exactingness,

•  hardness,

•  harshness,

•  inflexibility,

•  rigidity,

•  rigidness,

•  rigor,

•  rigorousness,

•  severity,

•  sternness,

•  strictness,

•  stringency,

•  dourness,

•  gruffness,

•  asceticism,

•  austereness,

•  austerity,

•  monasticism,

•  determination,

•  firmness,

•  resolve,

•  steadfastness,

•  obstinacy,

•  stubbornness

•  Antonyms : 

•  flexibility,

•  gentleness,

•  laxness,

•  mildness,

•  forbearance,

•  indulgence,

•  kindness,

•  lenience,

•  patience,

•  softness,

•  tenderness,

•  tolerance,

•  responsiveness,

•  willingness,

•  compliance,

•  pliability,

•  pliancy

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

  * e.g., " ... gave the beggar in the street a pitiless look and kept on walking "

•  Synonyms : 

•  affectless,

•  callous,

•  case-hardened,

•  cold-blooded,

•  compassionless,

•  desensitized,

•  hard,

•  hard-boiled,

•  hard-hearted,

•  heartless,

•  indurate,

•  inhuman,

•  inhumane,

•  insensate,

•  insensitive,

•  ironhearted,

•  merciless,

•  obdurate,

•  pachydermatous,

•  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