37 entries under unknown topic. ×

5
cryptic(adjective, obscure, strange, uncertain, vague)
3
abstruse(noun, hard, obscure, strange, uncertain)
3
mystic(adjective, obscure, solid, secret, supernatural)
2
arcane(adjective, obscure, solid, strange, deep)
1
backdoor(obscure, deep, clandestine, underground)
1
camouflaged(obscure, clandestine, underground, undisclosed)
1
close(obscure, solid, dense, underground)
1
clouded(obscure, indefinite, equivocal, clandestine)
1
conspiratorial(obscure, clandestine, underground, undisclosed)
1
covered(obscure, clandestine, underground, undisclosed)
1
deep(hard, obscure, delicate, complex)
1
esoteric(hard, obscure, delicate, strange, complex)
1
mystical(hard, obscure, delicate, strange, complex)
1
occult(obscure, strange, supernatural, spiritual)
1
out-of-the-way(obscure, deep, clandestine, underground)
1
recondite(obscure, strange, clandestine, underground)
1
reticent(obscure, deep, clandestine, underground)
1
retired(obscure, deep, clandestine, underground)
1
secluded(obscure, clandestine, underground, undisclosed)
1
shrouded(obscure, clandestine, underground, undisclosed)
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APASmart Define. (2015). enigmatical thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/enigmatical/thesaurus/synonyms
ChicagoSmart Define. 2015. "enigmatical thesaurus" https://smartdefine.org/enigmatical/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, enigmatical thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/enigmatical/thesaurus/synonyms>.
MLASmart Define. "enigmatical thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/enigmatical/thesaurus/synonyms>