38 entries under impenetrable topic. ×

23
compressed(verb, adjective, set, hard, tough)
21
concentrated(verb, adjective, set, strong, hard)
14
dense(adjective, set, hard, tough, solid)
13
thick(adjective, strong, hard, tough, solid)
8
close(adjective, set, hard, tough, solid)
6
packed(verb, adjective, close, strong, solid)
3
crammed(dense, profuse, packed, crowded)
3
crowded(adjective, set, solid, heavy, deep)
2
full(dense, profuse, packed, crowded)
2
tight(adjective, solid, full, dense, profuse)
1
brimming(dense, profuse)
1
bristling(dense, profuse)
1
bursting(dense, profuse)
1
chock-full(dense, profuse)
1
heaped(thick, dense, profuse, packed)
1
impervious(adjective, set, hard, tough, solid)
1
swarming(dense, profuse)
1
teeming(dense, profuse)
0
abundant(dense, profuse)
0
bushy(dense, profuse)
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APASmart Define. (2015). condensed thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/condensed/thesaurus/synonyms
ChicagoSmart Define. 2015. "condensed thesaurus" https://smartdefine.org/condensed/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, condensed thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/condensed/thesaurus/synonyms>.
MLASmart Define. "condensed thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/condensed/thesaurus/synonyms>