81 entries under serious topic. ×

39
dark(adjective, calm, dull, quiet, bad)
28
sad(adjective, unhappy, dark, black, depressed)
25
lugubrious(adjective, dull, obscure, sad, unhappy)
21
dull(adjective, upset, quiet, severe, sad)
20
grave(adjective, calm, dull, quiet, cool)
18
drab(adjective, calm, dull, quiet, soft)
18
solemn(adjective, calm, dull, quiet, cool)
16
funereal(adjective, dull, appearance, severe, obscure)
16
grim(adjective, person, dull, quiet, appearance)
16
sober(adjective, calm, dull, quiet, cool)
14
glum(adjective, person, dull, light, happy)
12
sedate(adjective, calm, dull, quiet, cool)
11
earnest(adjective, calm, dull, quiet, cool)
9
staid(adjective, calm, dull, quiet, set)
7
downbeat(noun, adjective, person, blue, severe)
7
leaden(adjective, dull, quiet, soft, severe)
7
moody(adjective, blue, sad, unhappy, depression)
6
heavy(adjective, upset, dull, quiet, severe)
5
cold(adjective, calm, dull, bad, soft)
5
demure(adjective, calm, quiet, cool, sober)
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APASmart Define. (2016). somber thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/somber/thesaurus/synonyms
ChicagoSmart Define. 2016. "somber thesaurus" https://smartdefine.org/somber/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, somber thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/somber/thesaurus/synonyms>.
MLASmart Define. "somber thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/somber/thesaurus/synonyms>