82 entries under obscure topic. ×

1
strange(unusual, deep, special, rare)
1
tenebrous(adjective, difficult, strange, uncertain)
1
unintelligible(adjective, difficult, solid, strange)
1
unknown(strange, deep, mysterious, clandestine)
1
unseen(adjective, unknown, clandestine, underground)
0
amphibological(adjective, difficult, uncertain, unclear)
0
camouflaged(unknown, clandestine, underground, undisclosed)
0
cloak-and-dagger(unknown, clandestine, underground, undisclosed)
0
cloak and dagger(expression, idiom, unknown, unrevealed)
0
closet(intimate, private, unknown, clandestine)
0
clouded(unknown, clandestine, underground, undisclosed)
0
conspiratorial(unknown, clandestine, underground, undisclosed)
0
disguised(unknown, clandestine, underground, undisclosed)
0
dull(adjective, ironic, deadpan, understated)
0
imperceptive(adjective, difficult, uncertain, unclear)
0
purblind(adjective, difficult, uncertain, unclear)
0
secret supernatural(expression, deep, mysterious, weird)
0
uncertain(adjective, difficult, unclear, equivocal)
0
underground(unknown, clandestine, undisclosed, unrevealed)
0
unenlightened(deep, unknown, clandestine, underground)
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APASmart Define. (2015). arcane thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/arcane/thesaurus/synonyms
ChicagoSmart Define. 2015. "arcane thesaurus" https://smartdefine.org/arcane/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, arcane thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/arcane/thesaurus/synonyms>.
MLASmart Define. "arcane thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/arcane/thesaurus/synonyms>