80 entries under sober topic. ×

91
serious(adjective, characteristic, calm, dull, quiet)
46
weighty(adjective, dull, hard, great, tough)
46
solemn(adjective, characteristic, calm, dull, quiet)
41
sad(adjective, hard, difficult, complex, gloomy)
27
earnest(adjective, characteristic, calm, dull, quiet)
23
sedate(adjective, characteristic, calm, dull, quiet)
17
staid(adjective, characteristic, calm, dull, quiet)
16
somber(adjective, calm, dull, quiet, cool)
14
dignified(adjective, characteristic, calm, dull, quiet)
14
thoughtful(adjective, characteristic, severe, honest, gloomy)
12
meaningful(adjective, dull, quiet, great, tough)
10
pensive(adjective, bad, severe, honest, sad)
8
demure(adjective, calm, quiet, cool)
8
intense(adjective, quiet, severe, harsh, heavy)
7
deep(adjective, sound, tough, severe, intense)
6
no-nonsense(adjective, calm, dull, quiet, cool)
6
ruminative(adjective, reasonable, rational, thoughtful)
5
calm(adjective, cool, sensible, restrained)
5
dull(adjective, quiet, severe, dark, heavy)
4
composed(adjective, calm, quiet, cool, reasonable)
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APASmart Define. (2016). grave thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/grave/thesaurus/synonyms
ChicagoSmart Define. 2016. "grave thesaurus" https://smartdefine.org/grave/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, grave thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/grave/thesaurus/synonyms>.
MLASmart Define. "grave thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/grave/thesaurus/synonyms>