3
quiet(adjective, calm, dull, cool, reasonable)
3
respectful(adjective, deferential, reverential)
3
royal
3
rueful(adjective, sad, sorrow, depression, woe)
3
sacramental
3
self-contained
3
sepulchral(adjective, sorrow, depress, sadness, emotion)
3
slow
3
sobersided(adjective, serious)
3
sorry(adjective, sad, sorrow, depression, depress)
3
steady(adjective, calm, quiet, set, cool)
3
stilted
3
stuffy
3
sulky(adjective, sorrow, depress, sadness, emotion)
3
taciturn
3
tenebrous(adjective, sorrow, depress, sadness, emotion)
3
triste(adjective, sad, sorrow, depression, woe)
3
tristful(adjective, sad, sorrow, depression, depress)
3
unflappable(adjective, calm, cool, dignified)
3
unperturbed
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APASmart Define. (2016). solemn thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/solemn/thesaurus/synonyms
ChicagoSmart Define. 2016. "solemn thesaurus" https://smartdefine.org/solemn/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, solemn thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/solemn/thesaurus/synonyms>.
MLASmart Define. "solemn thesaurus" 19 February 2016. Web. 25 September 2026. <https://smartdefine.org/solemn/thesaurus/synonyms>