103 entries under vague topic. ×

1
ghostly(dark, superior, mysterious, supernatural)
1
phantom(dark, superior, mysterious, supernatural)
1
suspect(uncertain, unreasonable, doubtful, shaky)
1
tenuous(quiet, weak, sharp, plain, exact)
1
unsure(adjective, rough, uncertain, unsettled)
1
wide(adjective, unknown, general, unclear)
0
unsound(adjective, uncertain)
0
undependable(adjective, unknown, general, unclear)
0
adumbral
0
chimerical
0
deceitful(adjective, subtle, intangible, indefinable)
0
dreamy
0
horrible(adjective, dark, gloomy, murky)
0
illusory(subtle, indefinable)
0
imaginary(hidden, unnoticed, unobserved)
0
inexhaustible(adjective, unknown, general, unclear)
0
innumerable(adjective, unknown, general, unclear)
0
multivocal(uncertain, unclear)
0
open-ended(adjective, unknown, unfixed, unlimited)
0
polysemous(uncertain, unclear)
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APASmart Define. (2016). obscure thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/obscure/thesaurus/synonyms
ChicagoSmart Define. 2016. "obscure thesaurus" https://smartdefine.org/obscure/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, obscure thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/obscure/thesaurus/synonyms>.
MLASmart Define. "obscure thesaurus" 29 March 2016. Web. 29 September 2026. <https://smartdefine.org/obscure/thesaurus/synonyms>