197 entries under adjective topic. ×

5
opaque(obscure, uncertain, vague, indefinite)
5
paradoxical(hard, obscure, sophisticated, tricky)
5
profound(hard, obscure, tricky, complicated)
5
queer(extraordinary, unusual, strange, exceptional)
5
unaccountable(strange, unfathomable, perplexing, bewildering)
5
unexplained
5
unintelligible(obscure, strange, uncertain, vague)
4
contradictory
4
convoluted(hard, fancy, obscure, difficult)
4
esoteric(hard, evil, obscure, heavy)
4
tough(difficult, laborious)
4
unexplainable(strange, unfathomable, inexplicable)
3
bizarre(extraordinary, unusual, strange, exceptional)
3
deep(hard, evil, obscure, delicate)
3
disturbing(obscure, awkward, sophisticated, uneasy)
3
implausible(likely, unlikely, unbelievable, improbable)
3
inconceivable(unreasonable, dubious, unlikely, flimsy)
3
mystic(knowledge, evil, obscure, strange)
3
oracular(dark, strange, uncertain, mysterious)
3
problematical(hard, difficult, loose, complex)
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APASmart Define. (2015). puzzling thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/puzzling/thesaurus/synonyms
ChicagoSmart Define. 2015. "puzzling thesaurus" https://smartdefine.org/puzzling/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, puzzling thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/puzzling/thesaurus/synonyms>.
MLASmart Define. "puzzling thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/puzzling/thesaurus/synonyms>