Dictionary.com
Thesaurus.com
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

  • unfitness noun

Etymology

Origin of unfit

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

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.

He says an unfit schools curriculum, a mental health crisis and a changing labour market have created a "perfect storm".

From BBC

But this turned into nine months after propulsion problems emerged in orbit and the Starliner spacecraft was deemed unfit to fly them back.

From Barron's

Judges have rejected arguments that the 80-year-old, who was arrested in March last year and transferred to the Netherlands the same day, was unfit to stand trial.

From Barron's

She was unfit and unhappy and turned to ChatGPT for advice on diet, supplements and skincare.

From BBC

Lord Mandelson replied that "if those events unfolded it would certainly convince the public that we are unfit for government".

From BBC