noun
fitness
FIHT-nuhs
noun
1
The condition of being physically healthy and strong, usually through exercise.
"Regular running has really improved his fitness."
"The gym offers a range of fitness classes."
2
The quality of being suitable or appropriate for something.
"The interview assessed her fitness for the role."
3
(biology) A measure of an organism's success at surviving and reproducing.
"Traits that increase fitness tend to spread through a population over generations."
How to Use Fitness
Learner’s notesIn plain EnglishBeing physically healthy and capable, or more broadly, being suited to a purpose.
Common pairings
physical fitness
fitness level
fitness for purpose
Word Forms
fitnesses plural
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Regular running has really improved his _____.
Etymology
From "fit" plus "-ness"; the physical exercise sense only became common in the 20th century.