fitness

noun

fit·​ness ˈfit-nəs 

1

: the quality or state of being fit

2

: the capacity of an organism to survive and transmit its genotype to reproductive offspring as compared to competing organisms

also : the contribution of an allele or genotype to the gene pool of subsequent generations as compared to that of other alleles or genotypes

Synonyms

• health
• healthiness
• heartiness
• robustness
• sap
• soundness
• verdure
• wellness
• wholeness
• wholesomeness

Examples of fitness in a Sentence

a gymnastics program promoting fitness and agility in school-aged children

I have to question the fitness of wearing a bright red dress to a funeral.

Recent Examples on the Web

For HNWIs, this includes spa-like bathrooms, meditation spaces, and state-of-the-art home fitness facilities. —Arash Jalili, Forbes, 18 Dec. 2024

Known for his active lifestyle and dedication to fitness, the controversial political figure, 70, was recently spotted working out at the exclusive Equinox Hudson Yards in an outfit that left gym-goers raising their eyebrows. —Thomas G. Moukawsher, Newsweek, 17 Dec. 2024

However, Peter's mother (Kathy Najimy) still wants to work her cupid magic by setting him on a blind date with a charming fitness instructor (Luke Macfarlane). —Kelsie Gibson, People.com, 17 Dec. 2024

Beyond the beach, the resort also offers complimentary access to beach cruisers, a family pool, a fitness center and dozens of complimentary classes, and a luxe spa with relaxation lounges with ocean views. —Beth Luberecki, USA TODAY, 17 Dec. 2024

Word History

First Known Use

1580, in the meaning defined at sense 1

Phrases Containing fitness

• physical fitness

Medical Definition

fitness

noun

fit·​ness ˈfit-nəs 

: the capacity of an organism to survive and transmit its genotype to reproductively fertile offspring as compared to competing organisms

also : the contribution of an allele or genotype to the gene pool of subsequent generations as compared to that of other alleles or genotypes