64 entries under hard topic. ×

13
involved(verb, adjective, fancy, difficult)
13
tangled(verb, adjective, obscure, difficult)
9
complicated(verb, adjective, obscure, difficult)
8
complex(adjective, fancy, difficult, involved)
8
intricate(adjective, fancy, obscure, difficult)
4
labyrinthine(adjective, fancy, obscure, difficult)
3
elaborate(adjective, fancy, difficult, complex)
3
knotty(adjective, fancy, obscure, difficult)
2
Byzantine(adjective, fancy, obscure, difficult)
2
abstruse(adjective, fancy, obscure, difficult)
2
meandering(obscure, sophisticated, tricky, complicated)
2
subtle(tricky, complicated)
1
Daedalean(adjective, fancy, obscure, difficult)
1
Gordian(adjective, fancy, obscure, difficult)
1
arduous(adjective, fancy, difficult, complex)
1
bewildering(obscure, sophisticated, involved, tricky)
1
can of worms(expression, adjective, idiom, fancy)
1
convoluted(adjective, fancy, obscure, difficult)
1
delicate(difficulty, tricky, complicated)
1
difficult(adjective, fancy, complex, sophisticated)
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APASmart Define. (2015). entangled thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/entangled/thesaurus/synonyms
ChicagoSmart Define. 2015. "entangled thesaurus" https://smartdefine.org/entangled/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, entangled thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/entangled/thesaurus/synonyms>.
MLASmart Define. "entangled thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/entangled/thesaurus/synonyms>