103 entries under vague topic. ×

17
incomprehensible(adjective, difficult, solid, dark, heavy)
17
misty(adjective, dull, clear, dark, gloomy)
16
concealed(adjective, quiet, cover, difficult, plain)
16
puzzling(adjective, dark, strange, uncertain, complex)
16
unknown(adjective, knowledge, rough, dark, superior)
15
doubtful(adjective, rough, dark, uncertain, unreasonable)
15
muddy(verb, adjective, dull, soft, flat)
15
nebulous(adjective, dull, clear, rough, dark)
15
occult(noun, verb, adjective, cover, block)
14
confused(adjective, dull, flat, difficult, dark)
14
shady(adjective, dull, dark, gloomy, uncertain)
14
unfathomable(adjective, hard, difficult, solid, dark)
13
indeterminate(adjective, rough, uncertain, doubtful, unsettled)
13
indistinguishable(adjective, unknown, unclear, hazy)
12
unintelligible(adjective, hard, rough, difficult, solid)
12
ill-defined(adjective, weak, rough, dark, uncertain)
12
tenebrous(adjective, dull, rough, difficult, dark)
11
equivocal(adjective, cover, clear, rough, difficult)
11
intricate(adjective, hard, difficult, heavy, complex)
11
perplexing(adjective, hard, rough, difficult, dark)
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APASmart Define. (2016). obscure thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/obscure/thesaurus/synonyms
ChicagoSmart Define. 2016. "obscure thesaurus" https://smartdefine.org/obscure/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, obscure thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/obscure/thesaurus/synonyms>.
MLASmart Define. "obscure thesaurus" 29 March 2016. Web. 28 September 2026. <https://smartdefine.org/obscure/thesaurus/synonyms>