34 entries under even topic. ×

5
long-standing(adjective, continue, steady, unchanging)
2
steadfast(calm, strong, solid, steady, stable)
2
steady(calm, strong, constant, unchanging)
1
anchored(calm, strong, solid, steady, substantial)
1
balanced(calm, strong, solid, steady, substantial)
1
brick-wall(calm, strong, solid, steady, substantial)
1
calm(strong, solid, steady, substantial)
1
deep-rooted(calm, strong, solid, steady, substantial)
1
equable(calm, strong, solid, steady, substantial)
1
firm(calm, strong, tough, steady)
1
nailed(calm, strong, solid, steady, substantial)
1
poised(calm, strong, solid, steady, substantial)
1
resolute(calm, strong, solid, steady, substantial)
1
safe(calm, strong, solid, steady, substantial)
1
secure(calm, strong, solid, steady, substantial)
1
set(calm, strong, solid, steady, substantial)
1
solid(calm, strong, steady, substantial)
1
stabile(calm, strong, solid, steady, substantial)
1
stalwart(calm, strong, solid, steady, substantial)
1
stationary(calm, strong, solid, steady, substantial)
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APASmart Define. (2016). perdurable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/perdurable/thesaurus/synonyms
ChicagoSmart Define. 2016. "perdurable thesaurus" https://smartdefine.org/perdurable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, perdurable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/perdurable/thesaurus/synonyms>.
MLASmart Define. "perdurable thesaurus" 3 March 2016. Web. 21 September 2026. <https://smartdefine.org/perdurable/thesaurus/synonyms>