75 entries under obscure topic. ×

5
concealed(adjective, hard, evil, meaning)
5
highbrow(adjective, smart, bright, rational)
4
cabalistic(adjective, hard, evil, humble)
4
hermetic(adjective, complex, thoughtful, meaning)
4
underground(adjective, down, unknown, far)
3
Orphic(adjective, complex, thoughtful, meaning)
3
close(adjective, set, strong, solid)
3
mystic(adjective, hard, evil, heavy)
3
puzzling(adjective, hard, evil, delicate)
2
buried(adjective, down, busy, occupied)
2
unintelligible(adjective, hard, delicate, complex)
2
vague(weak, pale, faded, puzzling)
1
academic(adjective, sound, complex, knowledgeable)
1
acroamatic(complex, thoughtful, mysterious, weird)
1
ambiguous(unknown, clandestine, underground, undisclosed)
1
covered(unknown, clandestine, underground, undisclosed)
1
enigmatical(hard, delicate, complex, unknown)
1
invisible
1
out-of-the-way(adjective, humble, distant, remote)
1
pedantic(sound, complex, knowledgeable, cultured)
10 years ago|42k views|share |citing 
APASmart Define. (2016). deep thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/deep/thesaurus/synonyms
ChicagoSmart Define. 2016. "deep thesaurus" https://smartdefine.org/deep/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, deep thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/deep/thesaurus/synonyms>.
MLASmart Define. "deep thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/deep/thesaurus/synonyms>