44 entries under heavy topic. ×

18
impenetrable(adjective, set, solid, deep)
10
turbid(adjective, dull, set, obscure, flat)
8
dense(adjective, dull, set, solid, dark)
4
deep(adjective, set, solid, doubtful)
3
close(adjective, set, solid, deep)
2
solid(adjective, set, deep, stiff)
1
caked(adjective, dull, set, flat, solid)
1
clabbered(adjective, set, solid, deep)
1
clotted(adjective, set, solid, deep)
1
coagulated(adjective, set, solid, deep)
1
compact(adjective, set, solid, deep)
1
compressed(adjective, set, solid, deep)
1
concentrated(adjective, set, solid, deep)
1
concrete(adjective, set, solid, deep)
1
condensed(adjective, set, solid, deep)
1
congealed(adjective, set, solid, deep)
1
consolidated(adjective, set, solid, deep)
1
crowded(adjective, set, solid, deep)
1
curdled(adjective, set, solid, deep)
1
firm(adjective, set, solid, deep)
<123>
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APASmart Define. (2016). opaque thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/opaque/thesaurus/synonyms
ChicagoSmart Define. 2016. "opaque thesaurus" https://smartdefine.org/opaque/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, opaque thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/opaque/thesaurus/synonyms>.
MLASmart Define. "opaque thesaurus" 29 February 2016. Web. 24 September 2026. <https://smartdefine.org/opaque/thesaurus/synonyms>