83 entries under solid topic. ×

24
dense(adjective, set, hard, tough, firm)
22
thick(adjective, close, hard, tough, firm)
20
condensed(adjective, close, set, hard, tough)
18
close(adjective, set, fix, hard, settle)
18
compressed(adjective, set, hard, tough, firm)
16
tight(adjective, close, hard, warm, firm)
15
short(adjective, close, sharp, small)
15
hard(adjective, set, strong, tough, firm)
14
firm(noun, adjective, close, set, fix)
14
impenetrable(adjective, close, set, hard, tough)
13
packed(adjective, close, set, firm)
12
concentrated(adjective, set, strong, hard, tough)
8
crowded(adjective, close, set, firm)
8
set(verb, adjective, close, fix, hard)
7
compacted(adjective, set, strong, hard, firm)
7
concrete(verb, adjective, close, set, hard)
7
harden(verb, close, set, develop, secure)
7
heavy(adjective, set, strong, hard, tough)
7
narrow(adjective, close, reduce, firm, eliminate)
7
stiff(adjective, set, hard, tough, firm)
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APASmart Define. (2016). compact thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/compact/thesaurus/synonyms
ChicagoSmart Define. 2016. "compact thesaurus" https://smartdefine.org/compact/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, compact thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/compact/thesaurus/synonyms>.
MLASmart Define. "compact thesaurus" 31 March 2016. Web. 20 September 2026. <https://smartdefine.org/compact/thesaurus/synonyms>