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Synonyms

unfit

American  
[uhn-fit] / ʌnˈfɪt /

adjective

  1. not fit; not adapted or suited; unsuitable.

    He was unfit for his office.

    Synonyms:
    unapt, inappropriate
  2. unqualified or incompetent.

    Synonyms:
    incapable
  3. not physically fit or in due condition.

  4. Biology. pertaining to an organism or population that is not adapted to prevailing conditions or is not producing offspring in sufficient numbers to maintain its contribution to the gene pool of the next generation.


verb (used with object)

  1. to render unfit or unsuitable; disqualify.

unfit British  
/ ʌnˈfɪt /

adjective

  1. unqualified, incapable, or incompetent

    unfit for military service

  2. unsuitable or inappropriate

    the ground was unfit for football

  3. in poor physical condition

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of unfit

First recorded in 1535–45; un- 1 + fit 1

Explanation

If someone is unfit, they're not qualified. You're unfit for a job as an ice cream truck driver if your only driving experience has been steering a bumper car at an amusement park. Farmland can be described as unfit for planting if it's been leached of nutrients, and a babysitter might be accused of being unfit if he gets distracted and loses track of his charges on the playground. In either case, the unfit thing or person doesn't meet the necessary requirements or standards. Another way to be unfit is to be out of shape or in poor physical condition. Fit can mean both "suitable" and "in good shape."

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Vocabulary lists containing unfit

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Boll believes Germany “banned” the film by not assigning it an age rating, fearing it could incite violence, making it unfit for German theatrical release.

From Salon • Jun. 30, 2026

In recent interviews, Cornyn said he would not campaign nor raise money for Paxton and stands by his sharp criticisms of the attorney general from the primary as corrupt and unfit for office.

From Salon • Jun. 25, 2026

After he was declared unfit to serve in the military due to a lung issue, he went on to play clarinet and saxophone in a band.

From Barron's • Jun. 22, 2026

“Director disqualifications exist to protect the public from those who have demonstrated they are unfit to run companies,” said Duncan Beach, head of the Insolvency Service.

From The Wall Street Journal • Jun. 4, 2026

The thought came to me that he should be treated with a hot mustard plaster, but I chased it away as unfit for the solemn moment at hand.

From "Ophelia" by Lisa Klein

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