Imperative
Imperative adjective - Forcing one's compliance or participation by or as if by law.
Rigorous and imperative are semantically related. In some cases you can use "Rigorous" instead an adjective "Imperative".
Nearby Words: imperious, imperatively
Rigorous
Rigorous adjective - Given to exacting standards of discipline and self-restraint.
Imperative and rigorous are semantically related. Sometimes you can use "Imperative" instead an adjective "Rigorous".
Cite this Source
Rigorous and Imperative. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/imperative/rigorous
Imperative & Rigorous. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/imperative/rigorous>.
Rigorous or Imperative. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/imperative/rigorous.
Google Ngram Viewer shows how "imperative" and "rigorous" have occurred on timeline