Synonyms|86Antonyms|1|Broader|0Narrower|0Related|9

25 entries under sphinx-like topic. ×

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poker-faced(adjective, difficult, ambiguous, hidden, unfathomable)
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secret(adjective, hidden, unfathomable, incomprehensible, enigmatic)
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sphinxlike(adjective, difficult, ambiguous, hidden, unfathomable)
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unexplainable(adjective, difficult, ambiguous, hidden, unfathomable)
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unreadable(ambiguous, unfathomable, enigmatic)
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APASmart Define. (2015). undiscoverable thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/undiscoverable/thesaurus/synonyms
ChicagoSmart Define. 2015. "undiscoverable thesaurus" https://smartdefine.org/undiscoverable/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, undiscoverable thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/undiscoverable/thesaurus/synonyms>.
MLASmart Define. "undiscoverable thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/undiscoverable/thesaurus/synonyms>