147 entries under unknown topic. ×

1
hermetical(dark, secret, isolated, hidden)
1
imperceivable(dark, secret, isolated, hidden)
1
in the dark(expression, idiom, dark, hidden)
1
incog(strange, secret, hidden, indefinite)
1
infinite(adjective, great, perfect, extraordinary, superior)
1
new(adjective, strange, unfamiliar, indefinite)
1
novel(adjective, new, unfamiliar, untried)
1
original(excellent, extraordinary, superior, new, fantastic)
1
out of view(expression, idiom, dark, hidden)
1
outlandish(adjective, new, unfamiliar, untried)
1
peculiar(strange, new, untried, inexplicable)
1
surreptitious(secret, hidden, underground, concealed)
1
unexposed(adjective, dark, secret, hidden)
1
unfrequented(adjective, quiet, remote, clandestine)
1
unsure(adjective, rough, uncertain, unsettled, vague)
1
wide(adjective, vague, general, unclear)
1
withheld(dark, secret, hidden, concealed)
0
backdoor(clandestine, underground, undisclosed, unrevealed)
0
uncommon(adjective, strange, new, different)
0
undependable(adjective, vague, general, unclear)
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APASmart Define. (2016). obscure thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/obscure/thesaurus/synonyms
ChicagoSmart Define. 2016. "obscure thesaurus" https://smartdefine.org/obscure/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, obscure thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/obscure/thesaurus/synonyms>.
MLASmart Define. "obscure thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/obscure/thesaurus/synonyms>