Source : Webster's Revised Unabridged Dictionary (1913)

Honorableness \Hon"or*a*ble*ness\, n.
   1. The state of being honorable; eminence; distinction.

   2. Conformity to the principles of honor, probity, or moral
      rectitude; fairness; uprightness; reputableness.

Source : WordNet®

honorableness
     n : the quality of deserving honor or respect; characterized by
         honor [syn: {honourableness}] [ant: {dishonorableness}]