64 entries under somber topic. ×

4
serene(adjective, calm, quiet, cool, reasonable)
4
subdued(adjective, calm, dull, quiet, reasonable)
4
unruffled(adjective, calm, quiet, cool, reasonable)
3
drab(adjective, calm, dull, quiet, reasonable)
3
imperturbable(adjective, calm, cool, sensible, dark)
3
quiet(adjective, calm, dull, cool, reasonable)
3
steady(adjective, calm, quiet, set, cool)
2
cold(adjective, calm, severe, sensible, dark)
2
practical(adjective, calm, sensible, dark, restrained)
2
rational(adjective, calm, quiet, reasonable, sensible)
2
realistic(adjective, calm, sensible, dark, restrained)
2
reflective(adjective, quiet, thoughtful, sober, serious)
2
resolute(adjective, set, severe, honest, thoughtful)
2
seemly(adjective, calm, quiet, cool, grand)
1
abnegating(adjective, calm, quiet, reasonable, sensible)
1
brooding(adjective, quiet, thoughtful, sober, serious)
1
cold sober(expression, adjective, calm, dull, quiet)
1
constant(adjective, thoughtful, sober, serious, sincere)
1
constrained(adjective, calm, quiet, reasonable, sensible)
1
determined(adjective, set, severe, honest, thoughtful)
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APASmart Define. (2016). solemn thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/solemn/thesaurus/synonyms
ChicagoSmart Define. 2016. "solemn thesaurus" https://smartdefine.org/solemn/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, solemn thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/solemn/thesaurus/synonyms>.
MLASmart Define. "solemn thesaurus" 19 February 2016. Web. 28 September 2026. <https://smartdefine.org/solemn/thesaurus/synonyms>