Invalidity and Unsoundness

Invalidity

Invalidity noun - Illogicality as a consequence of having a conclusion that does not follow from the premisses.

Unsoundness and invalidity are semantically related. in falsity topic. In some cases you can use "Unsoundness" instead a noun "Invalidity".

Unsoundness

Unsoundness noun - The condition of not being in good health.
Usage example: the overall unsoundness of her health in her last years greatly limited what she could do

Invalidity and unsoundness are semantically related. You can use "Invalidity" instead a noun "Unsoundness".
Cite this Source
Unsoundness and Invalidity. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/invalidity/unsoundness
Invalidity & Unsoundness. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/invalidity/unsoundness>.
Unsoundness or Invalidity. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/invalidity/unsoundness.
Google Ngram Viewer shows how "invalidity" and "unsoundness" have occurred on timeline