76 entries under obscure topic. ×

9
shadowy(adjective, dull, soft, flat)
8
clouded(adjective, dull, dark, gloomy)
8
dusky(adjective, dull, soft, flat)
8
tenebrous(adjective, dull, hard, difficult)
7
abstruse(adjective, hard, difficult, uncertain)
7
obfuscated(adjective, muddy, clouded)
7
perplexing(adjective, hard, difficult, unfathomable)
7
uncertain(adjective, hard, difficult, vague)
6
ambiguous(adjective, uncertain, vague, unclear)
6
amorphous
6
equivocal(adjective, hard, difficult, uncertain)
6
faint(adjective, dull, dark, gloomy)
6
fuzzy(adjective, dull, flat, dark)
5
indefinite(dull, gloomy, uncertain, dim)
5
puzzling(adjective, uncertain, vague, indefinite)
5
somber(adjective, dull, soft, flat)
4
drab(adjective, dull, soft, flat)
4
blind(adjective, soft, flat, dark)
4
indeterminate(adjective, uncertain, vague, unclear)
4
shapeless
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APASmart Define. (2016). opaque thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/opaque/thesaurus/synonyms
ChicagoSmart Define. 2016. "opaque thesaurus" https://smartdefine.org/opaque/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, opaque thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/opaque/thesaurus/synonyms>.
MLASmart Define. "opaque thesaurus" 29 February 2016. Web. 27 September 2026. <https://smartdefine.org/opaque/thesaurus/synonyms>