77 entries under serious topic. ×

38
sober(adjective, calm, dull, quiet, cool)
28
calm(verb, adjective, calm, quiet, cool)
27
cool(verb, adjective, calm, quiet, settle)
27
staid(adjective, calm, good, dull, quiet)
24
solemn(adjective, calm, dull, quiet, cool)
21
grave(adjective, calm, dull, quiet, cool)
19
composed(adjective, calm, quiet, cool, reasonable)
18
collected(adjective, calm, quiet, cool, reasonable)
18
steady(verb, adjective, calm, quiet, cool)
17
dignified(adjective, calm, dull, quiet, heavy)
15
quiet(verb, adjective, calm, dull, cool)
15
imperturbable(adjective, calm, quiet, cool, moderate)
14
earnest(adjective, calm, dull, quiet, cool)
11
demure(adjective, calm, good, quiet, cool)
11
somber(adjective, calm, dull, quiet, cool)
9
grim(adjective, dull, quiet, dark, heavy)
8
decorous(adjective, calm, good, cool, appropriate)
7
dull(verb, adjective, quiet, dark, heavy)
6
formal(adjective, good, quiet, gentle, sober)
6
self-possessed(adjective, calm, quiet, cool, moderate)
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APASmart Define. (2015). sedate thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sedate/thesaurus/synonyms
ChicagoSmart Define. 2015. "sedate thesaurus" https://smartdefine.org/sedate/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, sedate thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sedate/thesaurus/synonyms>.
MLASmart Define. "sedate thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/sedate/thesaurus/synonyms>