121 entries under important topic. ×

11
hazardous(adjective, bad, severe, nasty, difficult)
11
major(adjective, great, heavy, significant)
10
desperate(adjective, severe, intense, extreme)
10
dire(adjective, severe, extreme, serious)
10
great(extraordinary, heavy, significant, extreme)
10
risky(adjective, bad, delicate, heavy)
9
basic(adjective, severe, original, essential)
9
climacteric(adjective, safety)
9
fundamental(adjective, severe, significant, original)
9
imperative(adjective, big, determined, significant)
9
key(adjective, significant, essential, basic)
9
touchy(adjective, mean, bad, difficult, delicate)
8
hairy(adjective, informal)
8
necessary(adjective, big, significant, substantial)
7
central(adjective, significant, essential, vital)
7
exigent(adjective, hard, tough, difficult, big)
7
tough(adjective, hard, difficult, harsh)
6
deciding
6
indispensable(adjective, original, serious, essential)
6
instant(adjective, direct, prompt, importance)
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APASmart Define. (2016). critical thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/critical/thesaurus/synonyms
ChicagoSmart Define. 2016. "critical thesaurus" https://smartdefine.org/critical/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, critical thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/critical/thesaurus/synonyms>.
MLASmart Define. "critical thesaurus" 16 February 2016. Web. 24 September 2026. <https://smartdefine.org/critical/thesaurus/synonyms>