Synonyms|172Antonyms|16|Broader|1Narrower|0Related|28

45 entries under substantial topic. ×

1
resolute(calm, strong, solid, steady)
1
safe(calm, strong, solid, steady)
1
secure(calm, strong, solid, steady)
1
set(calm, strong, solid, steady)
1
solid(calm, strong, steady, even)
1
solid as a rock(expression, idiom, calm, strong)
1
sound(calm, strong, tough, solid)
1
stabile(calm, strong, solid, steady)
1
stalwart(calm, strong, solid, steady)
1
stationary(calm, strong, solid, steady)
1
staunch(calm, strong, solid, steady)
1
staying put(expression, calm, strong, solid)
1
stout(calm, strong, tough, solid)
1
strong(calm, tough, solid, steady)
1
sturdy(calm, strong, tough, solid, steady)
1
sure(calm, strong, solid, steady)
1
together(calm, strong, solid, steady)
1
unalterable(calm, strong, solid, steady)
1
unchangeable(calm, strong, solid, steady)
1
unfluctuating(calm, strong, 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>