45 entries under difficult topic. ×

2
Byzantine(adjective, hard, fancy, obscure)
2
Gordian(adjective, hard, fancy, obscure)
2
hidden(adjective, hard, evil, obscure)
2
labyrinthine(adjective, hard, fancy, obscure)
1
Daedalean(adjective, hard, fancy, obscure)
1
arduous(adjective, hard, fancy, severe)
1
awkward(adjective, uneasy, tricky, complicated)
1
can of worms(expression, adjective, idiom, hard, fancy)
1
elaborate(adjective, hard, fancy, complex)
1
entangled(adjective, hard, fancy, obscure)
1
formidable(hard, awkward, tricky, complicated)
1
gasser(adjective, hard, fancy, complex)
1
hi-tech(adjective, hard, fancy, complex)
1
interlaced(adjective, hard, fancy, complex)
1
mega factor(expression, adjective, hard, fancy)
1
mixed(adjective, hard, fancy, obscure)
1
sophisticated(adjective, hard, fancy, obscure)
1
sticky(awkward, uneasy, tricky, complicated)
1
troublesome(adjective, hard, fancy, loose)
1
various(adjective, hard, fancy, complex)
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APASmart Define. (2015). puzzling thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/puzzling/thesaurus/synonyms
ChicagoSmart Define. 2015. "puzzling thesaurus" https://smartdefine.org/puzzling/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, puzzling thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/puzzling/thesaurus/synonyms>.
MLASmart Define. "puzzling thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/puzzling/thesaurus/synonyms>