26 entries under adjective topic. ×

4
sober
4
solemn
3
grave
3
important
3
overserious
3
real
3
sedate
3
serious-minded
3
sincere
2
earnest
2
sobering
2
thoughtful
1
difficult
1
gargantuan
1
punctual
1
solid
0
burdensome
0
critical
0
employed
0
front and center(important, major, historic, eventful)
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APASmart Define. (2016). serious thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/serious/thesaurus/related
ChicagoSmart Define. 2016. "serious thesaurus" https://smartdefine.org/serious/thesaurus/related (accessed September 28, 2026).
HarvardSmart Define 2016, serious thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/serious/thesaurus/related>.
MLASmart Define. "serious thesaurus" 24 February 2016. Web. 28 September 2026. <https://smartdefine.org/serious/thesaurus/related>