75 entries under tricky topic. ×

43
complex(adjective, hard, simple, difficult, delicate)
42
intricate(adjective, hard, simple, evil, difficulty)
39
complicated(adjective, hard, simple, evil, difficulty)
38
difficult(adjective, hard, rough, difficult, delicate)
35
involved(adjective, hard, simple, difficult, delicate)
33
thorny(adjective, hard, difficulty, difficult, delicate)
32
hard(adjective, severe, rough, difficult, violent)
32
labyrinthine(adjective, hard, simple, difficulty, difficult)
28
sticky(adjective, hard, difficult, delicate, informal)
27
problematic(adjective, hard, difficult, delicate, complex)
19
esoteric(adjective, hard, evil, difficult, complex)
17
tangled(adjective, hard, simple, obscure, difficulty)
12
perplexing(adjective, hard, fancy, obscure, difficult)
10
puzzling(adjective, hard, fancy, evil, obscure)
9
ticklish(adjective, hard, tough, difficult, delicate)
8
problematical(adjective, hard, difficult, delicate, loose)
8
troublesome(adjective, hard, fancy, difficult, complex)
7
formidable(adjective, hard, severe, rough, difficult)
6
abstruse(adjective, hard, fancy, evil, obscure)
6
delicate(hard, difficult, complex, awkward)
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APASmart Define. (2015). knotty thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/knotty/thesaurus/synonyms
ChicagoSmart Define. 2015. "knotty thesaurus" https://smartdefine.org/knotty/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, knotty thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/knotty/thesaurus/synonyms>.
MLASmart Define. "knotty thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/knotty/thesaurus/synonyms>