600 entries under adjective topic. ×

9
fault-finding(opinion, description, characterization, judgement)
9
fundamental(severe, important, significant, original)
9
imperative(big, important, determined, significant)
9
key(important, significant, essential, basic)
9
main(significant, original, essential, vital)
9
minute(close, exact, precise, honorable)
9
punctilious(close, honorable, demanding, meticulous)
9
touchy(mean, bad, difficult, delicate)
9
trenchant(severe, keen, sharp, unpleasant)
8
caustic(severe, keen, sharp, harsh)
8
cutting(mean, severe, keen, sharp)
8
fine(exact, discriminating)
8
hairy(informal, important)
8
hard(tough, difficult, harsh, delicate)
8
necessary(big, important, significant, substantial)
8
rigid
7
caviling(mean, severe, harsh, nervous)
7
central(important, significant, essential, vital)
7
critic(severe, harsh, unsympathetic, unfavorable)
7
deprecating(opinion, description, characterization, judgement)
10 years ago|37k views|share |citing 
APASmart Define. (2016). critical thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/critical/thesaurus/synonyms
ChicagoSmart Define. 2016. "critical thesaurus" https://smartdefine.org/critical/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, critical thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/critical/thesaurus/synonyms>.
MLASmart Define. "critical thesaurus" 16 February 2016. Web. 26 September 2026. <https://smartdefine.org/critical/thesaurus/synonyms>