53 entries under solid topic. ×

2
crowded(adjective, close, short, substantial)
2
jam-packed(adjective, close, short, substantial)
2
packed(adjective, close, short, substantial)
1
close-grained(adjective, close, set, hard, tough)
1
short(adjective, close, fast, substantial)
1
solidified(hard, rigid, density)
0
appressed(adjective, tight, dense, compressed)
0
bunched(adjective, tight, dense, compressed)
0
circumscribed(adjective, close, short, substantial)
0
confined(adjective, close, short, substantial)
0
confining(adjective, close, short, substantial)
0
congealed(hard, rigid)
0
cramped(adjective, compact, tight, dense)
0
cropped(adjective, close, short, substantial)
0
fine-grained(hard, rigid)
0
hardened(hard, rigid)
0
inelastic(hard, rigid)
0
inflexible(hard, rigid)
0
jelled(hard, rigid)
0
narrow(adjective, close, short, substantial)
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APASmart Define. (2015). impermeable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/impermeable/thesaurus/synonyms
ChicagoSmart Define. 2015. "impermeable thesaurus" https://smartdefine.org/impermeable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, impermeable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/impermeable/thesaurus/synonyms>.
MLASmart Define. "impermeable thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/impermeable/thesaurus/synonyms>