75 entries under dense topic. ×

1
solidified(adjective, set, hard, tough, solid)
1
substantial(hard, tough, solid, sturdy, rigid)
1
syrupy(adjective, set, solid, heavy, deep)
1
thickened(adjective, set, solid, heavy, deep)
1
turbid(adjective, set, solid, heavy, deep)
1
vitrified(adjective, set, solid, heavy, deep)
0
brimming(profuse, impenetrable)
0
bristling(profuse, impenetrable)
0
bursting(profuse, impenetrable)
0
bushy(profuse, impenetrable)
0
chock-full(profuse, impenetrable)
0
considerable(profuse, impenetrable)
0
copious(profuse, impenetrable)
0
covered(profuse, impenetrable)
0
crammed(profuse, impenetrable)
0
crawling with(expression, profuse, impenetrable)
0
frequent(profuse, impenetrable)
0
full(profuse, impenetrable)
0
generous(profuse, impenetrable)
0
great(profuse, impenetrable)
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APASmart Define. (2015). impervious thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/impervious/thesaurus/synonyms
ChicagoSmart Define. 2015. "impervious thesaurus" https://smartdefine.org/impervious/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, impervious thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/impervious/thesaurus/synonyms>.
MLASmart Define. "impervious thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/impervious/thesaurus/synonyms>