9
humourless(adjective, severe, unfunny)
5
mirthless(adjective, unhappy, sadness, aloof, grey)
5
unhumorous
5
unsmiling(adjective, formidable)
4
grim(adjective, gloomy)
4
serious
4
somber(adjective, unhappy, sadness, aloof, grey)
3
grave(adjective, severe, sober, serious, somber)
3
joyless(adjective, unhappy, sadness, aloof, grey)
3
po-faced
3
severe(adjective, humourless)
3
solemn(adjective, sober, serious, somber)
3
staid(adjective, sober, serious, stale, somber)
3
unjoyful(adjective, unhappy, sadness, aloof, grey)
3
unmirthful(adjective, unhappy, sadness, aloof, grey)
2
sober(adjective, serious, somber)
2
cheerless
2
earnest(adjective, sober, serious, somber)
2
no-nonsense(adjective, sober, serious, somber)
2
sedate(adjective, sober, serious, somber)
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APASmart Define. (2015). humorless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/humorless/thesaurus/synonyms
ChicagoSmart Define. 2015. "humorless thesaurus" https://smartdefine.org/humorless/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, humorless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/humorless/thesaurus/synonyms>.
MLASmart Define. "humorless thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/humorless/thesaurus/synonyms>