97 entries under difficult topic. ×

38
severe(adjective, hard, tough, severe)
36
serious(adjective, hard, great, tough, severe)
30
urgent(adjective, hard, direct, tough, severe)
24
delicate(adjective, bad, sharp, difficulty)
22
pressing(adjective, hard, direct, tough)
18
fussy(adjective, hard, tough, sharp, fine)
17
demanding(adjective, hard, tough, severe)
16
captious(adjective, praise, irritable, cranky)
16
precarious(adjective, bad, delicate, heavy)
15
exacting(adjective, hard, tough, severe, fine)
15
strict(adjective, hard, tough, severe, sharp)
15
ticklish(adjective, bad, difficulty, delicate)
15
weighty(adjective, hard, hurt, great, tough)
14
perilous(adjective, bad, nasty, delicate)
11
hazardous(adjective, bad, severe, nasty)
9
touchy(adjective, mean, bad, delicate)
8
hard(adjective, tough, harsh, delicate)
7
exigent(adjective, hard, tough, big)
7
querulous(adjective, upset, mean, hard, tough)
7
tough(adjective, hard, harsh, important)
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APASmart Define. (2016). critical thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/critical/thesaurus/synonyms
ChicagoSmart Define. 2016. "critical thesaurus" https://smartdefine.org/critical/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, critical thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/critical/thesaurus/synonyms>.
MLASmart Define. "critical thesaurus" 16 February 2016. Web. 22 September 2026. <https://smartdefine.org/critical/thesaurus/synonyms>