114 entries under hard topic. ×

31
puzzling(adjective, fancy, obscure, rough)
25
baffling(verb, adjective, obscure, difficult)
21
confusing(verb, adjective, difficult, false)
20
enigmatic(adjective, obscure, rough, difficult)
20
intricate(adjective, fancy, obscure, difficult)
17
obscure(adjective, rough, difficult, dark)
15
involved(adjective, fancy, obscure, difficult)
14
abstruse(adjective, fancy, obscure, difficult)
14
difficult(adjective, fancy, obscure, delicate)
14
mysterious(adjective, obscure, strange, complex)
13
confounding(noun, verb, adjective, wrong)
12
complex(adjective, fancy, difficult, delicate)
11
bewildering(adjective, obscure, false, sophisticated)
11
knotty(adjective, fancy, obscure, difficult)
10
complicated(adjective, obscure, difficult, delicate)
9
unfathomable(adjective, obscure, difficult, dark)
7
embarrassing(noun, adjective, severe, difficulty)
7
labyrinthine(adjective, fancy, obscure, difficult)
7
recondite(adjective, fancy, obscure, difficult)
6
convoluted(adjective, fancy, obscure, difficult)
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APASmart Define. (2015). perplexing thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/perplexing/thesaurus/synonyms
ChicagoSmart Define. 2015. "perplexing thesaurus" https://smartdefine.org/perplexing/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, perplexing thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/perplexing/thesaurus/synonyms>.
MLASmart Define. "perplexing thesaurus" 30 July 2015. Web. 20 September 2026. <https://smartdefine.org/perplexing/thesaurus/synonyms>