Synonyms|272Antonyms|106|Broader|0Narrower|0Related|841

205 entries under adjective topic. ×

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elusory(demoniac, unspecific, supermundane)
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exceptional
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extramundane(obscure, dark, superior, supernatural)
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fluky(uncertain, unpredictable, unexpected)
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from left field(expression, idiom, uncertain, unpredictable)
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heavy(deep, profound, bottomless)
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hyperphysical(demoniac, unspecific, supermundane)
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illegible(vague, incoherent, incomprehensible, inarticulate)
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imaginary(supernatural, spiritual, mystical, nonrational)
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impalpable
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implausible(extraordinary, strange, unbelievable, unthinkable)
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indefinable
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indiscernible(solid, dense, unfathomable, unintelligible)
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indistinct(vague, incoherent, incomprehensible, illegible)
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ineffable
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inexplicit(vague, incoherent, incomprehensible, illegible)
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jumbled(vague, incoherent, incomprehensible, illegible)
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meaningless(vague, incoherent, incomprehensible, illegible)
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muddled(vague, incoherent, incomprehensible, illegible)
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mysterious blank(expression, difficult, ambiguous, hidden)
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APASmart Define. (2015). unknowable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unknowable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unknowable thesaurus" https://smartdefine.org/unknowable/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, unknowable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unknowable/thesaurus/synonyms>.
MLASmart Define. "unknowable thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/unknowable/thesaurus/synonyms>