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unclear(adjective, obscure, dubious)
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unconscious
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undetected
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undisclosed
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undiscovered
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undistinguishable
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unimagined
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unknown
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unnoticed
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unobserved
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unrevealed
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unsolved
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unsubstantial
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unthought-of
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untraceable
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APASmart Define. (2015). discernible thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/discernible/thesaurus/antonyms
ChicagoSmart Define. 2015. "discernible thesaurus" https://smartdefine.org/discernible/thesaurus/antonyms (accessed September 29, 2026).
HarvardSmart Define 2015, discernible thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/discernible/thesaurus/antonyms>.
MLASmart Define. "discernible thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/discernible/thesaurus/antonyms>