hardiness

Etymology

From Middle English hardynesse; equivalent to hardy + -ness.

noun

1. The quality of being hardy.
   1. The quality of being able to withstand fatigue and hardship; (of a plant) the quality of being resistant to cold or other environmental conditions.
      Kale is known for its winter-hardiness.
      […] with usefull and generous labours preserving the bodies health, and hardinesse; to render lightsome, cleare, and not lumpish obedience to the minde, 1642, John Milton, An apology against a pamphlet call’d A modest confutation of the animadversions upon the remonstrant against Smectymnuus, London: John Rothwell, page 13
      Wild wheat is small and hard, quite capable of looking after itself, but its heads contain only a few small kernels. Cultivated wheat has lost its hardiness and its self-reliance, but its heads are filled with large kernels which feed the nation. 1915, Nellie McClung, chapter 4, in In Times Like These, Toronto: McLeod & Allen
   2. (obsolete) The quality of being bold in the face of risk or authority.
2. (obsolete) Hardship; fatigue.