Source : Webster's Revised Unabridged Dictionary (1913)

Hardiness \Har"di*ness\, n.
   1. Capability of endurance.

   2. Hardihood; boldness; firmness; assurance. --Spenser.

            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.] --Spenser.

Source : WordNet®

hardiness
     n : the property of strong in constitution [syn: {robustness}, {lustiness}]