Diligent
Diligent adjective - Involved in often constant activity.
Serious and diligent are semantically related in professional topic. In some cases you can use "Serious" instead an adjective "Diligent".
Nearby Words: diligence, diligently
Serious
Serious adjective - Not joking or playful in mood or manner.
Diligent and serious are semantically related in professional topic. Sometimes you can use "Diligent" instead an adjective "Serious".
Nearby Words: seriously, seriousness
Mutual synonyms
Related pairs
Both words in one sentence
- UFO also brings us Nazrin, who is increasingly portrayed as much more serious and diligent than her "master" Shou, thanks to Shou canonically losing her Jeweled Pagoda, forcing Nazrin to find it for her.
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Lumsden: Oh, it's unfashionable, I know, but yes, we're methodical, yes, we're diligent, yes, we're serious, and where's the crime in that?
Source: Acceptable Professional Targets
Cite this Source
Serious and Diligent. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/diligent/serious
Diligent & Serious. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/diligent/serious>.
Serious or Diligent. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/diligent/serious.
Google Ngram Viewer shows how "diligent" and "serious" have occurred on timeline