90 entries under obscure topic. ×

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difficult(adjective, uncertain, unclear, equivocal)
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fearful(adjective, impalpable, inexpressible, indescribable)
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ghostly
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hard(adjective, difficult, unclear)
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imperceptive(adjective, difficult, uncertain, unclear)
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in question(anxious, worried, troubled, concerned)
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intricate(adjective, heavy, doubtful, unclear)
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involved(adjective, heavy, doubtful, unclear)
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purblind(adjective, difficult, uncertain, unclear)
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umbral
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APASmart Define. (2016). vague thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/vague/thesaurus/synonyms
ChicagoSmart Define. 2016. "vague thesaurus" https://smartdefine.org/vague/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, vague thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/vague/thesaurus/synonyms>.
MLASmart Define. "vague thesaurus" 29 February 2016. Web. 29 September 2026. <https://smartdefine.org/vague/thesaurus/synonyms>