114 entries under hard topic. ×

6
disconcerting(adjective, severe, offensive, disturbing)
6
opaque(adjective, obscure, difficult, unfathomable)
6
thorny(adjective, difficult, delicate, complex)
6
unclear(adjective, obscure, rough, difficult)
5
inexplicable(adjective, dark, strange, uncertain)
5
paradoxical(adjective, obscure, difficult, uncertainty)
5
problematic(adjective, tough, fancy, rough)
5
upsetting(noun, adjective, tough, severe)
4
abstract(obscure, complex, tricky, complicated)
4
discomposing(severe, offensive, distressing, upsetting)
4
dismaying(adjective, severe, offensive, distressing)
4
tangled(adjective, obscure, difficult, complex)
4
uncertain(adjective, severe, obscure, difficulty)
3
Byzantine(adjective, fancy, obscure, difficult)
3
enigmatical(adjective, difficult, strange, striking)
3
problematical(adjective, difficult, delicate, loose)
3
unintelligible(adjective, obscure, rough, difficult)
2
Gordian(adjective, fancy, obscure, difficult)
2
delicate(difficulty, awkward, uneasy, tricky)
2
elaborate(adjective, fancy, difficult, complex)
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APASmart Define. (2015). perplexing thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/perplexing/thesaurus/synonyms
ChicagoSmart Define. 2015. "perplexing thesaurus" https://smartdefine.org/perplexing/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, perplexing thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/perplexing/thesaurus/synonyms>.
MLASmart Define. "perplexing thesaurus" 30 July 2015. Web. 21 September 2026. <https://smartdefine.org/perplexing/thesaurus/synonyms>