180 entries under serious topic. ×

1
unexcited(adjective, calm, quiet, reasonable, sensible)
1
unfaltering(adjective, complete, warm, firm, total)
1
unhesitating(adjective, firm, certain, resolute)
1
unimpassioned(adjective, calm, quiet, reasonable, sensible)
1
unpretentious(open, honest, true, straightforward, straight)
1
up-front(open, honest, true, straightforward, straight)
1
well-ordered(adjective, regular, practical, competent)
1
workaday(adjective, regular, practical, competent)
0
academic(thoughtful, reflective)
0
bookish(thoughtful, reflective)
0
brooding(adjective, sober, grave, somber)
0
erudite(thoughtful, reflective)
0
grubbing(thoughtful, reflective)
0
hard as nails(expression, adjective, idiom, determined)
0
learned(thoughtful, reflective)
0
lettered(thoughtful, reflective)
0
lugubrious(dull, dark, gloomy, sober)
0
scholarly(thoughtful, reflective)
0
well-informed(thoughtful, reflective)
0
well-read(thoughtful, reflective)
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APASmart Define. (2016). earnest thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/earnest/thesaurus/synonyms
ChicagoSmart Define. 2016. "earnest thesaurus" https://smartdefine.org/earnest/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, earnest thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/earnest/thesaurus/synonyms>.
MLASmart Define. "earnest thesaurus" 24 March 2016. Web. 29 September 2026. <https://smartdefine.org/earnest/thesaurus/synonyms>