59 entries under serious topic. ×

1
primary(big, important, significant, substantial)
1
principal(great, big, important, substantial, large)
1
resolute(adjective, severe, thoughtful, sober)
1
resolved(adjective, severe, thoughtful, sober)
1
sedate(adjective, dull, quiet, severe, big)
1
somber(adjective, dull, quiet, severe, big)
1
stable(adjective, strong, solid, big, important)
1
staid(adjective, dull, quiet, severe, big)
1
steady(adjective, strong, solid, big, important)
1
strictly business(expression, adjective, dull, quiet, tough)
1
thoughtful(adjective, dull, quiet, open, severe)
0
hard(adjective, tough, severe, important, significant)
0
overshadowing(great, important)
0
preeminent(great, important)
0
radical(great, important)
0
sincere(adjective, thoughtful, sober, solemn)
0
stellar(great, important)
-1
star(great, important)
-1
top(great, important)
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APASmart Define. (2016). meaningful thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/meaningful/thesaurus/synonyms
ChicagoSmart Define. 2016. "meaningful thesaurus" https://smartdefine.org/meaningful/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, meaningful thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/meaningful/thesaurus/synonyms>.
MLASmart Define. "meaningful thesaurus" 29 March 2016. Web. 30 September 2026. <https://smartdefine.org/meaningful/thesaurus/synonyms>