Improper and Rigorous

Opposite meaning words

Improper adjective - Not appropriate for a particular occasion or situation.

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Rigorous is an antonym for improper.

Nearby Word: improperly

Rigorous adjective - Given to exacting standards of discipline and self-restraint.

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Improper is an antonym for rigorous in severe topic.

Nearby Words: rigorously, rigor, rigour, rigorism

Cite this Source

Rigorous and Improper. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/improper/rigorous

Improper & Rigorous. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/improper/rigorous>.

Rigorous or Improper. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/improper/rigorous.

Google Ngram Viewer shows how "improper" and "rigorous" have occurred on timeline