88 entries under difficult topic. ×

31
puzzling(adjective, hard, fancy, obscure, rough)
25
baffling(verb, adjective, hard, obscure)
21
confusing(verb, adjective, hard, false)
20
enigmatic(adjective, hard, obscure, rough)
20
intricate(adjective, hard, fancy, obscure)
17
obscure(adjective, hard, rough, dark)
15
involved(adjective, hard, fancy, obscure)
14
abstruse(adjective, hard, fancy, obscure)
13
confounding(noun, verb, adjective, hard, wrong)
13
incomprehensible(adjective, obscure, dark, strange)
12
complex(adjective, hard, fancy, delicate)
11
knotty(adjective, hard, fancy, obscure)
10
complicated(adjective, hard, obscure, delicate)
9
cryptic(adjective, obscure, dark, strange)
9
unfathomable(adjective, hard, obscure, dark)
7
equivocal(adjective, obscure, rough, dark)
7
labyrinthine(adjective, hard, fancy, obscure)
7
recondite(adjective, hard, fancy, obscure)
6
convoluted(adjective, hard, fancy, obscure)
6
opaque(adjective, hard, obscure, unfathomable)
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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>