50 entries under calm topic. ×

1
sound(strong, steady, even, constant)
1
stabile(adjective, strong, secure, firm)
1
stalwart(strong, solid, steady, substantial)
1
staying put(expression, strong, solid, substantial)
1
stout(strong, solid, steady, substantial)
1
substantial(strong, steady, even, constant)
1
together(adjective, strong, secure, firm)
1
well-built(strong, solid, steady, substantial)
1
well-founded(strong, solid, steady, substantial)
0
sturdy(strong, steady, substantial, even)
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APASmart Define. (2015). immutable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/immutable/thesaurus/synonyms
ChicagoSmart Define. 2015. "immutable thesaurus" https://smartdefine.org/immutable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, immutable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/immutable/thesaurus/synonyms>.
MLASmart Define. "immutable thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/immutable/thesaurus/synonyms>