291 entries under adjective topic. ×

5
furtive(obscure, strange, secret, private)
5
indecipherable(obscure, dark, uncertain, incomprehensible)
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funny(unusual, strange, odd, peculiar)
5
insoluble(secret, concealed)
5
intricate(hard, evil, obscure, heavy)
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metaphysical(superior, outstanding, amazing, best)
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peculiar(unusual, strange, odd, striking)
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spiritual(strange, rational, intellectual, secret)
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unusual(extraordinary, strange, wonderful, marvelous)
4
confused(uncertain, unintelligibility)
4
bewildering(hard, tricky, complicated, puzzling)
4
complex(hard, obscure, delicate, complex)
4
extraordinary(superior, unusual, strange, wonderful)
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ghostly(extraordinary, superior, unusual, wonderful)
4
indistinct(doubtful, vague, unclear, ambiguous)
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obscured(secret, unknown, hidden, concealed)
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opaque
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orphic(obscure, complex, deep, thoughtful)
4
otherworldly(extraordinary, unusual, wonderful, marvelous)
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paradoxical(hard, delicate, uncertain, complex)
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APASmart Define. (2016). mysterious thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/mysterious/thesaurus/synonyms
ChicagoSmart Define. 2016. "mysterious thesaurus" https://smartdefine.org/mysterious/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, mysterious thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/mysterious/thesaurus/synonyms>.
MLASmart Define. "mysterious thesaurus" 24 February 2016. Web. 28 September 2026. <https://smartdefine.org/mysterious/thesaurus/synonyms>