11
equivocal(adjective, cover, obscure, difficult, dark)
11
vague(adjective, obscure, difficult, uncertain, doubtful)
10
opaque(adjective, hard, obscure, uncertain, secret)
10
unfathomable(adjective, obscure, difficult, dark, strange)
9
deep(adjective, hard, evil, obscure, humble)
9
perplexing(adjective, obscure, difficult, dark, strange)
8
concealed(adjective, cover, evil, obscure, difficult)
8
covert(adjective, obscure, dark, secret, reticent)
8
cryptical(adjective, concealment)
8
veiled(adjective, obscure, strange, secret, unknown)
7
close(adjective, obscure, dark, secret, reticent)
7
indefinite(obscure, uncertain, doubtful, vague, dubious)
7
inexplicable(adjective, obscure, dark, strange, uncertain)
6
baffling(adjective, obscure, difficult, dark, strange)
6
indecipherable(adjective, dark, uncertain, mysterious, unintelligible)
6
murky(adjective, obscure, secret)
6
oracular(adjective, obscure, dark, uncertain, doubtful)
6
secretive(adjective, obscure, strange, mysterious, secret)
6
strange(adjective, obscure, secret, unknown, clandestine)
5
confusing(adjective, uncertain, vague, unclear, unintelligible)
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APASmart Define. (2016). cryptic thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/cryptic/thesaurus/synonyms
ChicagoSmart Define. 2016. "cryptic thesaurus" https://smartdefine.org/cryptic/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, cryptic thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/cryptic/thesaurus/synonyms>.
MLASmart Define. "cryptic thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/cryptic/thesaurus/synonyms>