81 entries under fixed topic. ×

64
stable(adjective, strong, sound, secure, tough)
61
firm(noun, adjective, calm, strong, sound)
49
sound(adjective, calm, strong, secure, tough)
37
substantial(adjective, calm, strong, sound, secure)
37
unfluctuating(adjective, calm, strong, secure, strain)
36
enduring(adjective, calm, strong, sound, secure)
33
constant(adjective, calm, strong, secure, tough)
29
fast(adjective, calm, strong, secure, tough)
29
steady(adjective, calm, strong, sound, secure)
28
sturdy(adjective, calm, strong, sound, secure)
25
steadfast(adjective, calm, strong, secure, strain)
20
settled(adjective, strong, secure, strain, firm)
19
stabile(adjective, calm, strong, secure, strain)
14
solid(adjective, calm, strong, sound, tough)
10
abiding(adjective, calm, strong, secure, tough)
8
dependable(adjective, strong, tough, firm, solid)
6
changeless(adjective, set, firm, solid, stable)
6
reliable(adjective, calm, strong, secure, tough)
6
unchangeable(adjective, calm, strong, secure, firm)
5
unchanging(adjective, set, firm, solid, steady)
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APASmart Define. (2015). durable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/durable/thesaurus/synonyms
ChicagoSmart Define. 2015. "durable thesaurus" https://smartdefine.org/durable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, durable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/durable/thesaurus/synonyms>.
MLASmart Define. "durable thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/durable/thesaurus/synonyms>