62 entries under thorny topic. ×

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annoying(tricky, spiky, spiny)
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barbed(tricky, spiky, spiny)
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brambly(tricky, spiky, spiny)
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briery(tricky, spiky, spiny)
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bristly(tricky, spiky, spiny)
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can of worms(expression, adjective, idiom, difficult, complex)
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dense(adjective, difficult, complex, involved, intricate)
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echinated(tricky, spiky, spiny)
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full of twists and turns(expression, adjective, idiom, difficult, complex)
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gasser(adjective, difficult, complex, intricate)
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hi-tech(adjective, difficult, complex, intricate)
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interlaced(verb, adjective, difficult, complex, intricate)
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mega factor(expression, adjective, difficult, complex, intricate)
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mystical(adjective, hard, evil, complex, deep)
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pointed(tricky, spiky, spiny)
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spiky
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spiny(tricky, spiky)
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stimulating(tricky, spiky, spiny)
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unclear(adjective, hard, complex, doubtful, vague)
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unintelligible(adjective, hard, complex, doubtful, vague)
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APASmart Define. (2016). complicated thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/complicated/thesaurus/synonyms
ChicagoSmart Define. 2016. "complicated thesaurus" https://smartdefine.org/complicated/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, complicated thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/complicated/thesaurus/synonyms>.
MLASmart Define. "complicated thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/complicated/thesaurus/synonyms>