Diligent and Rigorous

Diligent

Diligent adjective - Involved in often constant activity.

Rigorous and diligent are semantically related in careful topic. In some cases you can use "Rigorous" instead an adjective "Diligent", when it comes to topics like conscientious.

Nearby Words: diligence, diligently

Rigorous

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

Diligent and rigorous are semantically related in careful topic. Sometimes you can use "Diligent" instead an adjective "Rigorous", if it concerns topics such as meticulous.

Nearby Words: rigorously, rigor, rigour, rigorism
Cite this Source
Rigorous and Diligent. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/diligent/rigorous
Diligent & Rigorous. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/diligent/rigorous>.
Rigorous or Diligent. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/diligent/rigorous.
Google Ngram Viewer shows how "diligent" and "rigorous" have occurred on timeline