77 entries under serious topic. ×

1
pointful(important, significant, substantial, consistent)
1
primary(big, important, significant, substantial)
1
reflective(severe, deep, thoughtful, sober)
1
resolute(adjective, severe, honest, harsh, cruel)
1
resolved(adjective, severe, honest, harsh, cruel)
1
sincere(adjective, set, severe, honest, thoughtful)
1
stable(adjective, strong, firm, solid, important)
1
steady(adjective, severe, honest, important, significant)
1
underlined(adjective, big, heavy, important, substantial)
0
dull(dark, heavy, gloomy, sober)
0
lugubrious(dull, dark, gloomy, sober)
0
no-fooling(adjective, thoughtful, sober, sincere)
0
overshadowing(great, important)
0
radical(great, important)
0
star(great, important)
0
stellar(great, important)
0
top(great, important)
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APASmart Define. (2015). weighty thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/weighty/thesaurus/synonyms
ChicagoSmart Define. 2015. "weighty thesaurus" https://smartdefine.org/weighty/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, weighty thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/weighty/thesaurus/synonyms>.
MLASmart Define. "weighty thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/weighty/thesaurus/synonyms>