Synonyms|55Antonyms|78|Broader|0Narrower|0Related|313
5
staid(adjective, serious)
4
earnest(adjective, work, heavy, serious)
4
grave(adjective, serious)
4
grim(adjective, serious)
4
sedate(adjective, serious)
4
serious(adjective, work, heavy)
4
sober(adjective, serious)
4
solemn(adjective, serious)
4
unsmiling(adjective, serious)
4
weighty(adjective, serious)
3
severe(adjective, serious)
3
thoughtful(adjective, serious)
2
businesslike(adjective, work, heavy, serious)
2
long-faced(adjective, serious)
2
no-nonsense(adjective, work, heavy, serious)
2
resolute(adjective, serious)
2
set(adjective, serious)
2
steady(adjective, serious)
2
stern(adjective, serious)
2
unhumorous(adjective, serious)
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APASmart Define. (2015). sobersided thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/sobersided/thesaurus/synonyms
ChicagoSmart Define. 2015. "sobersided thesaurus" https://smartdefine.org/sobersided/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, sobersided thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/sobersided/thesaurus/synonyms>.
MLASmart Define. "sobersided thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/sobersided/thesaurus/synonyms>