unfitness

Plural: unfitnesses

Noun

• poor physical condition; being out of shape or out of condition (as from a life of ease and luxury)
• lacking the power to perform
• the quality of not being suitable
  • "the judges agreed on his unfitness for the appointment"
• The characteristic of being unfit or ill-suited.
• The characteristic of being unfit or out of physical shape.

Synonyms

inability, softness

Antonyms

ability, fitness