Synonyms|949Antonyms|256|Broader|10Narrower|11Related|1.1k

62 entries under serious topic. ×

1
acute(adjective, severe, important, significant)
1
all-important(adjective, significant, essential, basic)
1
bent on(expression, adjective, resolute, persistent)
1
buckled down(expression, adjective, resolute, persistent)
1
dangerous(severe, significant, vital, grave)
1
desperate(severe, important, significant, critical)
1
dire(severe, important, significant, critical)
1
driven(adjective, resolute, persistent, unwavering)
1
hard-as-nails(adjective, resolute, persistent, unwavering)
1
hardboiled(adjective, resolute, persistent, unwavering)
1
integral(important, significant, essential, critical)
1
mean business(expression, adjective, determined, resolute)
1
on ice(expression, adjective, resolute, persistent)
1
pat(adjective, determined, usual, regular)
1
pressing(adjective, big, significant, substantial, large)
1
set on(expression, adjective, resolute, persistent)
1
solid(adjective, good, strong, honest, important)
1
unfaltering(adjective, firm, certain, determined)
0
afflictive
0
hard as nails(expression, idiom, resolute, persistent)
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ChicagoSmart Define. 2015. "decisive thesaurus" https://smartdefine.org/decisive/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, decisive thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/decisive/thesaurus/synonyms>.
MLASmart Define. "decisive thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/decisive/thesaurus/synonyms>