Diligent
Diligent adjective - Involved in often constant activity.
Usage example: a student who has been unceasingly diligent in pursuit of a degree in mathematics
Vigorous and diligent are semantically related. In some cases you can use "Vigorous" instead an adjective "Diligent".
Nearby Words: diligence, diligently
Mutual synonyms
Related pairs
Cite this Source
Vigorous and Diligent. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/diligent/vigorous
Diligent & Vigorous. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/diligent/vigorous>.
Vigorous or Diligent. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/diligent/vigorous.
Google Ngram Viewer shows how "diligent" and "vigorous" have occurred on timeline