Harsh
Rigorous
Rigorous adjective - Given to exacting standards of discipline and self-restraint.
Usage example: a rigorous football coach who pushes his players to their physical and mental limits
Harsh is a synonym for rigorous in severe topic. You can use "Harsh" instead an adjective "Rigorous", if it concerns topics such as strict.
Mutual synonyms
Both words in one sentence
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Utopia Justifies the Means: Plato's Republic institutes a rigorous discipline on its citizens that seems rather harsh to modern readers and would have even seemed so to most Greeks (although perhaps not the Spartans).
Source: Older Than Feudalism
Cite this Source
Rigorous and Harsh. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/harsh/rigorous
Harsh & Rigorous. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/harsh/rigorous>.
Rigorous or Harsh. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/harsh/rigorous.
Google Ngram Viewer shows how "harsh" and "rigorous" have occurred on timeline