The Collaborative International Dictionary
Miserableness \Mis"er*a*ble*ness\, n. The state or quality of being miserable.
Wiktionary
n. The property of being miserable.
Usage examples of "miserableness".
It impressed me most disagreeably to hear my mother forever talking of the miserableness and worthlessness of the earthly life, and of the blessedness hereafter as the only thing deserving of our attention, and at the same time observe how with unconscious motherly matchmaking and secret strategy she sought to arrange a rich marriage for her son.
The more Jerusha preached to them about the miserableness of their sin, the more heartily they agreed.
But for sheer hangdog miserableness, I'm damned if you people don't beat them all—come day, go day, God save Sunday!
He did not go much further, but sat down on the cold floor and gave himself up to complete miserableness, for a long while.