64 entries under tricky topic. ×

1
unfathomable(adjective, hard, obscure, sophisticated)
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abstract(hard, obscure, puzzling, perplexing)
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annoying(thorny, spiky, spiny)
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barbed(thorny, spiky, spiny)
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brambly(thorny, spiky, spiny)
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briery(thorny, spiky, spiny)
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bristly(thorny, spiky, spiny)
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echinated(thorny, spiky, spiny)
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enigmatical(hard, caught, multiplex, daedal)
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hair-trigger
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hard to explain(expression, hard, caught, multiplex)
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hard to solve(expression, hard, caught, multiplex)
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inexplicable
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loose
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mystical(adjective, hard, evil, complex, deep)
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pointed(thorny, spiky, spiny)
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spiny(thorny, spiky)
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stimulating(thorny, spiky, spiny)
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unclear(adjective, hard, complex, doubtful, vague)
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uncomfortable
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APASmart Define. (2016). complicated thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/complicated/thesaurus/synonyms
ChicagoSmart Define. 2016. "complicated thesaurus" https://smartdefine.org/complicated/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, complicated thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/complicated/thesaurus/synonyms>.
MLASmart Define. "complicated thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/complicated/thesaurus/synonyms>