piti·less /ˈpɪtɪləs, ˈpɪtḷəs/
  (a.)無情的,冷酷的,無憐憫心的
  Pit·i·less, a.
  1. Destitute of pity; hard-hearted; merciless; as, a pitilessmaster; pitiless elements.
  2. Exciting no pity; as, a pitiless condition.
  -- Pit*i*less*ly, adv. -- Pit*i*less*ness, n.
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  pitiless
       adj 1: without mercy or pity; "an act of ruthless ferocity"; "a
              monster of remorseless cruelty" [syn: remorseless, ruthless,
               unpitying]
       2: deficient in humane and kindly feelings [syn: unkind]