70 entries under involved 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)
33
thorny(adjective, hard, difficulty, difficult, delicate)
32
hard(adjective, severe, rough, difficult, violent)
32
labyrinthine(adjective, hard, simple, difficulty, difficult)
30
Byzantine(adjective, hard, simple, difficult, complex)
30
tricky(adjective, hard, difficult, delicate, complex)
28
elaborate(adjective, hard, simple, difficult, complex)
26
sophisticated(adjective, hard, difficult, complex)
25
daedal(adjective, hard, simple, difficult, complex)
24
Gordian(adjective, hard, difficult, complex)
17
tangled(adjective, hard, simple, obscure, difficulty)
13
convoluted(adjective, hard, simple, fancy, obscure)
12
perplexing(adjective, hard, fancy, obscure, difficult)
10
puzzling(adjective, hard, fancy, evil, obscure)
10
tortuous(adjective, obscure, difficult, complex, sophisticated)
6
abstruse(adjective, hard, fancy, evil, obscure)
5
enigmatic(adjective, hard, evil, obscure, difficult)
11 years ago|18k views|share |citing 
APASmart Define. (2015). knotty thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/knotty/thesaurus/synonyms
ChicagoSmart Define. 2015. "knotty thesaurus" https://smartdefine.org/knotty/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, knotty thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/knotty/thesaurus/synonyms>.
MLASmart Define. "knotty thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/knotty/thesaurus/synonyms>