64 entries under clandestine topic. ×

27
recondite(adjective, evil, obscure, strange, deep)
27
dark(adjective, obscure, mysterious, secret, hidden)
26
mysterious(adjective, knowledge, evil, obscure, solid)
21
secret(adjective, evil, obscure, strange, odd)
21
occult(noun, adjective, knowledge, evil, obscure)
20
esoteric(adjective, evil, obscure, strange, deep)
19
cryptic(adjective, knowledge, evil, obscure, difficult)
18
obscure(adjective, dull, hard, difficult, solid)
17
abstruse(adjective, evil, obscure, difficult, strange)
16
mystic(adjective, knowledge, evil, obscure, solid)
13
deep(adjective, hard, evil, obscure, heavy)
11
hidden(verb, adjective, evil, obscure, solid)
11
mystical(adjective, hard, knowledge, evil, obscure)
6
confidential(adjective, intimate, secret, private, restricted)
5
covert(adjective, strange, secret, underground)
4
hush-hush(adjective, intimate, secret, private)
4
restricted(adjective, secret, underground, undisclosed)
3
furtive(adjective, obscure, strange, secret, unknown)
3
unrevealed(adjective, obscure, deep, mysterious, unknown)
2
ambiguous(adjective, obscure, deep, doubtful, vague)
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APASmart Define. (2015). arcane thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/arcane/thesaurus/synonyms
ChicagoSmart Define. 2015. "arcane thesaurus" https://smartdefine.org/arcane/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, arcane thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/arcane/thesaurus/synonyms>.
MLASmart Define. "arcane thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/arcane/thesaurus/synonyms>