hardnesse

Noun

 * 1) * 1567, Arthur Golding: Ovid's Metamorphoses Bk. 3 lines 78-81
 * But yet his hardnesse savde him not against the piercing dart.
 * For hitting right betweene the scales that yeelded in that part
 * Whereas the joynts doe knit the backe, it thirled through the skin,
 * And pierced to his filthy mawe and greedy guts within.
 * And pierced to his filthy mawe and greedy guts within.

Etymology
From ; equivalent to.

Noun

 * , the quality of being hard