hardiness
  耐久力;頑強;大膽
  Har·di·ness n.
  1. Capability of endurance.
  2. Hardihood; boldness; firmness; assurance.
  Plenty and peace breeds cowards; Hardness ever
  Of hardiness is mother.   --Shak.
     They who were not yet grown to the hardiness of avowing the contempt of the king.   --Clarendon.
  3. Hardship; fatigue. [Obs.]
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  hardiness
       n : the property of strong in constitution [syn: robustness, lustiness]