English Reference
noun

fitness

n.
US /ˈfɪtnəs/ UK /fˈɪtnəs/ fit·ness UK spelling fitnesses

  1. 01 B1 Intermediate

    the state of being physically healthy and strong, especially through regular exercise.

    the condition of being physically sound and healthy, typically resulting from exercise and proper nutrition.

    Simple

    He goes to the gym every morning to improve his overall fitness.

    In context

    The coach designed a rigorous programme to ensure the players reached peak fitness before the start of the competitive season.

    healthstaminawell being
  2. 02 B2 Upper Intermediate Formal

    how suitable or appropriate someone or something is for a particular job or purpose.

    the quality of being suitable, appropriate, or fit for a specific purpose or role.

    Simple

    The committee questioned his fitness for the role of manager.

    In context

    The legal challenge focused on the fitness of the building for residential use, citing numerous safety violations.

    unsuitabilityincompetence
  3. 03 C1 Advanced AcademicTechnical Science

    how well a living thing can survive and have babies in its environment.

    the quantitative representation of individual reproductive success, relating to the average contribution to the gene pool of the next generation.

    Simple

    In nature, the fitness of an animal depends on its ability to find food and mates.

    In context

    Evolutionary biologists measure fitness by an organism's ability to survive to reproductive age and successfully produce viable offspring.

    reproductive success
  4. 04 C2 Proficiency British EnglishSlangInformal

    the quality of being very attractive or good-looking.

    the state of being physically attractive or sexually appealing.

    Simple

    He was well-known in the village for his fitness and charm.

    In context

    The local tabloids often commented on the fitness of the young actors attending the premiere.

    Teacher's tip

    This sense is specific to British slang and is rarely used in formal or international contexts; learners should use 'attractiveness' instead.


From fit + -ness. First attested in the 16th century, with the physical sense from 1935.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level B1 · Intermediate
Frequency Common
Updated