Rigor and Rigidness

Rigor

Rigor noun - The quality or state of being demanding or unyielding (as in discipline or criticism).
Usage example: after being coddled by his former coach, the swimmer was shocked by the rigor of the new training program

Rigidness and rigor are semantically related. In some cases you can use "Rigidness" instead a noun "Rigor".

Rigidness

Rigidness noun - The quality or state of being demanding or unyielding (as in discipline or criticism).
Usage example: no one even asked anymore, as their father's rigidness regarding bedtime was legendary

Rigor and rigidness are semantically related. Sometimes you can use "Rigor" instead a noun "Rigidness".
Cite this Source
Rigidness and Rigor. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/rigor/rigidness
Rigor & Rigidness. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/rigor/rigidness>.
Rigidness or Rigor. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/rigor/rigidness.
Google Ngram Viewer shows how "rigor" and "rigidness" have occurred on timeline