97 entries under obscure topic. ×

13
deep(adjective, hard, evil, heavy)
13
weird(adjective, unusual, strange, wonderful)
12
impenetrable(adjective, solid, strange, secret)
11
hidden(adjective, hard, evil, solid)
11
ambiguous(adjective, dark, uncertain, doubtful)
11
cabalistic(adjective, knowledge, evil, solid)
11
vague(adjective, uncertain, doubtful, dubious)
9
profound(adjective, hard, delicate, complex)
8
eerie(adjective, extraordinary, unusual, strange)
8
concealed(adjective, evil, strange, new)
8
magical(adjective, extraordinary, superior, unusual)
7
unintelligible(adjective, hard, solid, dark)
6
difficult(adjective, hard, strange, complex)
6
unaccountable(adjective, solid, superior, marvelous)
5
furtive(adjective, strange, secret, private)
5
indecipherable(adjective, dark, uncertain, incomprehensible)
5
intricate(adjective, hard, evil, heavy)
5
latent(dark, secret, unknown, hidden)
5
undisclosed(dark, secret, unknown, hidden)
4
complex(adjective, hard, delicate, complex)
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APASmart Define. (2016). mysterious thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/mysterious/thesaurus/synonyms
ChicagoSmart Define. 2016. "mysterious thesaurus" https://smartdefine.org/mysterious/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, mysterious thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/mysterious/thesaurus/synonyms>.
MLASmart Define. "mysterious thesaurus" 24 February 2016. Web. 30 September 2026. <https://smartdefine.org/mysterious/thesaurus/synonyms>