Synonyms|450Antonyms|97|Broader|7Narrower|0Related|60
2
ambiguous(adjective, obscure, deep, doubtful, vague)
2
close(obscure, solid, intimate, private, unknown)
2
complicated(adjective, evil, deep, doubtful, vague)
2
eerie(obscure, deep, mysterious, weird)
2
equivocal(adjective, obscure, difficult, dark, strange)
2
extramundane
2
indecipherable(adjective, unfathomable, incomprehensible, enigmatic, sphinx-like)
2
involved
2
knotty(adjective, evil, deep, mysterious, hidden)
2
literary
2
nebulous
2
numinous(supernatural, spiritual, mystical)
2
oracular(adjective, prophetic)
2
otherworldly(supernatural, spiritual, mystical)
2
preterhuman
2
sibylline
2
stealthy(adjective, secret, clandestine, underground, undisclosed)
2
supramundane
2
surreptitious(adjective, clandestine, underground, undisclosed)
2
top-secret(clandestine, underground, undisclosed)
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APASmart Define. (2015). arcane thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/arcane/thesaurus/synonyms
ChicagoSmart Define. 2015. "arcane thesaurus" https://smartdefine.org/arcane/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, arcane thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/arcane/thesaurus/synonyms>.
MLASmart Define. "arcane thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/arcane/thesaurus/synonyms>