128 entries under difficult topic. ×

9
ticklish(adjective, hard, tough, delicate)
8
problematical(adjective, hard, delicate, loose)
8
troublesome(adjective, hard, fancy, complex)
7
formidable(adjective, hard, severe, rough)
6
abstruse(adjective, hard, fancy, evil, obscure)
6
delicate(hard, complex, awkward, tricky)
6
scabrous(adjective, rough, harsh, coarse)
5
awkward(adjective, tough, difficulty, delicate)
5
demanding(adjective, hard, tough, severe, rough)
5
enigmatic(adjective, hard, evil, obscure)
5
hairy(adjective, severe, rough, harsh)
5
strenuous(adjective, hard, severe, rough)
5
uphill(adjective, hard, tough, severe, rough)
4
effortful(adjective, hard, tough, severe, rough)
4
entangled(adjective, hard, fancy, obscure)
4
obscure(adjective, hard, complex, sophisticated)
4
onerous(adjective, hard, tough, severe, rough)
4
recondite(adjective, hard, fancy, evil, obscure)
4
terrible(adjective, tough, rough, heavy)
4
wearying(adjective, tough, rough, heavy)
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APASmart Define. (2015). knotty thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/knotty/thesaurus/synonyms
ChicagoSmart Define. 2015. "knotty thesaurus" https://smartdefine.org/knotty/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, knotty thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/knotty/thesaurus/synonyms>.
MLASmart Define. "knotty thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/knotty/thesaurus/synonyms>