Antonyms of noun fitness

2 of 4 senses of fitness

Sense 1
fitness, fittingness -- (the quality of being suitable; "they had to prove their fitness for the position")
       Antonym of unfitness (Sense 3)
      => unfitness -- (the quality of not being suitable; "the judges agreed on his unfitness for the appointment")

Sense 2
fitness, physical fitness -- (good physical condition; being in shape or in condition)
       Antonym of unfitness (Sense 1)
      => unfitness, softness -- (poor physical condition; being out of shape or out of condition (as from a life of ease and luxury))

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun fitness

4 senses of fitness

Sense 1
fitness, fittingness -- (the quality of being suitable; "they had to prove their fitness for the position")
       => suitability, suitableness -- (the quality of having the properties that are right for a specific purpose; "an important requirement is suitability for long trips")

Sense 2
fitness, physical fitness -- (good physical condition; being in shape or in condition)
       => condition, shape -- (the state of (good) health (especially in the phrases `in condition' or `in shape' or `out of condition' or `out of shape'))

Sense 3
seaworthiness, fitness -- (fitness to traverse the seas)
       => soundness -- (a state or condition free from damage or decay)

Sense 4
fitness -- (the quality of being qualified)
       => competence, competency -- (the quality of being adequately or well qualified physically and intellectually)