Unfit and Unsound

Unfit

Unfit adjective - Not in good physical or mental condition; out of condition.
Usage example: certified as unfit for army service

Unsound is a synonym for unfit. In some cases you can use "Unsound" instead an adjective "Unfit".

Nearby Word: unfitly

Unsound

Unsound adjective - Physically unsound or diseased.
Usage example: unsound teeth

Unfit is a synonym for unsound. Sometimes you can use "Unfit" instead an adjective "Unsound".

Nearby Words: unsounded, unsoundly
Cite this Source
Unsound and Unfit. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/unfit/unsound
Unfit & Unsound. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/unfit/unsound>.
Unsound or Unfit. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/unfit/unsound.
Google Ngram Viewer shows how "unfit" and "unsound" have occurred on timeline