16 entries under sturdy topic. ×

12
durable(adjective, calm, strong, tough, continue)
9
stable(adjective, tough, fixed, constant)
8
permanent(adjective, calm, strong, continue)
6
persistent(adjective, continue, constant, enduring)
5
constant(adjective, calm, strong, substantial, stable)
4
long-lasting(adjective, tough, continue, enduring)
3
tough(adjective, calm, strong, solid, steady)
2
perduring(tough, stable, constant, enduring)
1
fast(calm, strong, tough, solid, substantial)
1
firm(calm, strong, tough, steady, even)
1
fixed(tough, stable, constant, enduring)
1
reliable(calm, strong, tough, solid, substantial)
1
sound(calm, strong, tough, solid, substantial)
1
stout(calm, strong, tough, solid, substantial)
1
strong(calm, tough, solid, steady, substantial)
1
substantial(calm, strong, tough, solid, steady)
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APASmart Define. (2016). perdurable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/perdurable/thesaurus/synonyms
ChicagoSmart Define. 2016. "perdurable thesaurus" https://smartdefine.org/perdurable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, perdurable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/perdurable/thesaurus/synonyms>.
MLASmart Define. "perdurable thesaurus" 3 March 2016. Web. 22 September 2026. <https://smartdefine.org/perdurable/thesaurus/synonyms>