11 entries under firm topic. ×

7
tenable(adjective, strong, hard, sound)
5
stable(adjective, strong, hard, steady)
5
consistent(adjective, steady, stable, fixed)
2
enduring(adjective, strong, hard, steady)
2
persistent(adjective, steady, stable, fixed)
1
stabile(adjective, steady, stable, fixed)
1
sustained(adjective, steady, stable, fixed)
1
unfluctuating(adjective, steady, stable, fixed)
1
endurant(adjective, steady, stable, fixed)
1
well-balanced(adjective, balance, steady, stable)
1
well balanced(adjective, balance, steady, stable)
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APASmart Define. (2016). sustainable thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/sustainable/thesaurus/synonyms
ChicagoSmart Define. 2016. "sustainable thesaurus" https://smartdefine.org/sustainable/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, sustainable thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/sustainable/thesaurus/synonyms>.
MLASmart Define. "sustainable thesaurus" 29 March 2016. Web. 29 September 2026. <https://smartdefine.org/sustainable/thesaurus/synonyms>