92 entries under hard topic. ×

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hidden(tricky, complicated)
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impeding(severe, offensive, distressing, upsetting)
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inexplicable(delicate, complex, tricky, complicated)
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intricate(tricky, complicated)
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involved(tricky, complicated)
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knotty(tricky, complicated)
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labyrinthine(tricky, complicated)
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loose(delicate, complex, tricky, complicated)
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meandering(tricky, complicated)
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mysterious(delicate, complex, tricky, complicated)
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mystical(delicate, complex, tricky, complicated)
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obscure(tricky, complicated)
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obstinate(tricky, complicated)
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ominous(severe, offensive, distressing, upsetting)
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paradoxical(delicate, complex, tricky, complicated)
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pessimistic(severe, offensive, distressing, upsetting)
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problematical(delicate, complex, tricky, complicated)
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profound(delicate, complex, tricky, complicated)
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prophetic(severe, offensive, distressing, upsetting)
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rambling(tricky, complicated)
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APASmart Define. (2015). vexing thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/vexing/thesaurus/synonyms
ChicagoSmart Define. 2015. "vexing thesaurus" https://smartdefine.org/vexing/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, vexing thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/vexing/thesaurus/synonyms>.
MLASmart Define. "vexing thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/vexing/thesaurus/synonyms>