Rigidness and Rigorousness

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

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

Rigorousness

Rigorousness noun - The quality or state of being demanding or unyielding (as in discipline or criticism).
Usage example: the rigorousness of the training paid off when the dance students performed brilliantly at the recital

Rigidness and rigorousness are semantically related. You can use "Rigidness" instead a noun "Rigorousness".
Cite this Source
Rigorousness and Rigidness. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/rigidness/rigorousness
Rigidness & Rigorousness. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/rigidness/rigorousness>.
Rigorousness or Rigidness. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/rigidness/rigorousness.
Google Ngram Viewer shows how "rigidness" and "rigorousness" have occurred on timeline