46 entries under hard topic. ×

12
perplexing(noun, verb, adjective, wrong)
10
baffling(adjective, delicate, complex, tricky)
10
confusing(verb, adjective, delicate, false)
10
puzzling(adjective, false, tricky, ambiguous)
9
bewildering(adjective, false, tricky, ambiguous)
7
enigmatic(adjective, tricky, complicated)
7
mystifying(adjective, delicate, complex, tricky)
4
complex(adjective, delicate, tricky, complicated)
4
intricate(adjective, tricky, complicated, puzzling)
3
inexplicable(adjective, delicate, complex, tricky)
3
marvelous(adjective, difficult, amazing, striking)
3
mysterious(adjective, delicate, complex, tricky)
2
complicated(adjective, tricky, puzzling, confusing)
2
knotty(adjective, tricky, complicated, puzzling)
2
labyrinthine(adjective, tricky, complicated)
2
problematical(delicate, complex, tricky, complicated)
1
abstruse(adjective, tricky, complicated)
1
difficult(adjective, striking, tricky, complicated)
1
enigmatical(adjective, difficult, delicate, complex)
1
involved(adjective, tricky, complicated, puzzling)
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APASmart Define. (2015). confounding thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/confounding/thesaurus/synonyms
ChicagoSmart Define. 2015. "confounding thesaurus" https://smartdefine.org/confounding/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, confounding thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/confounding/thesaurus/synonyms>.
MLASmart Define. "confounding thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/confounding/thesaurus/synonyms>