noun. The character of being unfit, in any sense.

noun. The characteristic of being unfit.

noun. the quality of not being suitable

noun. poor physical condition; being out of shape or out of condition (as from a life of ease and luxury)

noun. lacking the power to perform

"The unfitness is in the soul and it's a taint and a disgrace."

blankness  degeneracy  dissimilarity  falsity  forlornness  

disability  disqualification  ineligibility  unsuitability