75 entries under dull topic. ×

7
inauspicious(adjective, gloomy, miserable, warning)
7
muddy(adjective, soft, obscure, flat)
6
depressed(adjective, unhappy, character, gloomy)
6
despondent(adjective, character, unhappy, gloomy)
6
shaded(adjective, cool, gloomy, lack)
5
indefinite(adjective, weak, rough, strange)
5
lonesome(adjective, gloomy, miserable, bleak)
5
woeful(adjective, bad, low, sad)
4
dolorous(adjective, sad, unhappy, sorrow)
4
downcast(adjective, sad, unhappy, gloomy)
3
Stygian(adjective, characteristic, rare, feature)
3
Tartarean(adjective, characteristic, rare, feature)
3
depressive(adjective, gloomy, dim, bleak)
3
leaden(adjective, characteristic, shade, color, feature)
3
starless(adjective, characteristic, shade, color, feature)
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APASmart Define. (2016). dark thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/dark/thesaurus/synonyms
ChicagoSmart Define. 2016. "dark thesaurus" https://smartdefine.org/dark/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, dark thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/dark/thesaurus/synonyms>.
MLASmart Define. "dark thesaurus" 3 April 2016. Web. 25 September 2026. <https://smartdefine.org/dark/thesaurus/synonyms>