63 entries under firm topic. ×

1
fix(verb, close, set, stick)
1
fortify(verb, close, set, dry)
1
fossilize(verb, close, set, dry)
1
freeze(verb, close, set, dry)
1
gird(verb, close, set, dry)
1
hardened(adjective, set, hard, tough)
1
monolithic(adjective, set, hardened)
1
nerve(verb, close, set, dry)
1
ossify(verb, close, set, dry)
1
poured(adjective, set, hardened, precast)
1
precast(adjective, set, stiff, hardened)
1
precipitate(verb, close, set, dry)
1
press(verb, close, set, dry)
1
reinforce(verb, close, set, dry)
1
set in stone(expression, adjective, idiom, set)
1
settle(verb, close, set, dry)
1
starch(verb, close, set, dry)
1
steeled(adjective, set, hardened, unsubmissive)
1
temper(verb, close, set, dry)
1
toughen(verb, close, set, dry)
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APASmart Define. (2016). concrete thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/concrete/thesaurus/synonyms
ChicagoSmart Define. 2016. "concrete thesaurus" https://smartdefine.org/concrete/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, concrete thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/concrete/thesaurus/synonyms>.
MLASmart Define. "concrete thesaurus" 31 March 2016. Web. 28 September 2026. <https://smartdefine.org/concrete/thesaurus/synonyms>