99 entries under firm topic. ×

7
harden(verb, close, set, develop, secure)
7
narrow(adjective, close, reduce, eliminate)
7
stiff(adjective, set, hard, tough)
6
consolidated(adjective, close, set, strong, hard)
5
coagulate(verb, close, set, fix, settle)
5
tamp(verb, place, force, arrange)
4
cramped(adjective, solid, full, stiff)
4
rigid(adjective, close, set, strong, hard)
4
secure(verb, adjective, hard, develop, join)
4
strengthen(verb, close, set, fix, develop)
3
amalgamate(verb, close, set, fix, settle)
3
densify(close, set, fix, settle)
3
solidified(adjective, set, hard, tough)
3
thicken(verb, close, set, fix, develop)
3
unyielding(adjective, close, set, hard, tough)
2
cement(verb, close, set, fix, develop)
2
clot(verb, close, set, fix, settle)
2
fortify(verb, close, set, fix, develop)
2
incompressible(adjective, dense, density)
2
inflexible(adjective, close, set, strong, hard)
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APASmart Define. (2016). compact thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/compact/thesaurus/synonyms
ChicagoSmart Define. 2016. "compact thesaurus" https://smartdefine.org/compact/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, compact thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/compact/thesaurus/synonyms>.
MLASmart Define. "compact thesaurus" 31 March 2016. Web. 23 September 2026. <https://smartdefine.org/compact/thesaurus/synonyms>