306 entries under firm topic. ×

8
decisive(adjective, certain, determined, significant)
8
sure(adjective, calm, strong, secure, tough)
7
close(verb, adjective, hold, fix, hard)
7
persevering(adjective, strong, tough, flat)
7
solidified(verb, adjective, hard, tough)
7
tough(adjective, calm, strong, hard, severe)
7
unchangeable(adjective, calm, strong, secure, flat)
7
unflinching(adjective, strong, flat, certain)
6
changeless(adjective, severe, harsh, solid)
6
compact(verb, adjective, close, fix, hard)
6
contract(verb, control, close, fix, check)
6
crystallize(verb, form, close, fix, develop)
6
curdle(verb, close, change, fix, settle)
6
hidebound(adjective, mean, determined, stiff)
6
in the bag(expression, adjective, idiom, solid)
6
indurate(verb, adjective, close, fix, hard)
6
jelled(verb, adjective, hard, tough)
6
loyal(adjective, strong, solid, true)
6
square(verb, adjective, control, order, change)
6
staunch(adjective, calm, strong, secure, tough)
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APASmart Define. (2016). set thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/set/thesaurus/synonyms
ChicagoSmart Define. 2016. "set thesaurus" https://smartdefine.org/set/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, set thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/set/thesaurus/synonyms>.
MLASmart Define. "set thesaurus" 1 March 2016. Web. 23 September 2026. <https://smartdefine.org/set/thesaurus/synonyms>