Synonyms|104Antonyms|136|Broader|0Narrower|0Related|689

4 entries under formidable topic. ×

5
unsmiling
3
grave(adjective, severe, sober, serious, somber)
2
stern(adjective, severe, sober, serious, somber)
1
dour(adjective, gloomy)
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APASmart Define. (2015). humorless thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/humorless/thesaurus/synonyms
ChicagoSmart Define. 2015. "humorless thesaurus" https://smartdefine.org/humorless/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, humorless thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/humorless/thesaurus/synonyms>.
MLASmart Define. "humorless thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/humorless/thesaurus/synonyms>