Synonyms|55Antonyms|78|Broader|0Narrower|0Related|313
1
austere(adjective, serious)
1
bound(adjective, serious)
1
contemplative(adjective, serious)
1
decorous
1
deliberate(adjective, serious)
1
demure
1
determined(adjective, serious)
1
formal
1
frowning
1
genuine(adjective, serious)
1
honest(adjective, serious)
1
humorless
1
humourless
1
in earnest(adjective, idiom, work, heavy, serious)
1
intent(adjective, serious)
1
moderate
1
pensive(adjective, serious)
1
poker-faced
1
reflective(adjective, serious)
1
sincere(adjective, serious)
For more, visit Sobersided on Power Thesaurus
11 years ago|2.7k views|share |citing 
APASmart Define. (2015). sobersided thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sobersided/thesaurus/synonyms
ChicagoSmart Define. 2015. "sobersided thesaurus" https://smartdefine.org/sobersided/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, sobersided thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sobersided/thesaurus/synonyms>.
MLASmart Define. "sobersided thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/sobersided/thesaurus/synonyms>