97 entries under calm topic. ×

7
resolute(adjective, close, strong, secure)
7
unchangeable(adjective, strong, secure, flat)
6
indomitable(adjective, cool, determined, resolute)
6
unvarying(adjective, strong, secure, firm)
5
perdurable(adjective, strong, continue, substantial)
5
secure(adjective, strong, sound, tough)
5
staunch(adjective, close, strong, sound)
5
sturdy(adjective, strong, sound, secure)
5
tough(adjective, strong, sound, fit)
4
forbearing(adjective, quiet, gentle, flat)
4
sure(adjective, close, strong, complete)
3
deep-rooted(adjective, strong, solid, substantial)
3
dispassionate(adjective, cool, tolerant, excitability)
3
set(adjective, strong, secure, flat)
3
solid(adjective, strong, sound, tough)
3
stoical(adjective, quiet, cool, gentle)
2
indulgent(adjective, quiet, gentle, restrained)
2
lenient(adjective, quiet, gentle, restrained)
2
philosophical(adjective, quiet, gentle, persistent)
2
reliable(adjective, close, strong, secure)
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APASmart Define. (2016). enduring thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/enduring/thesaurus/synonyms
ChicagoSmart Define. 2016. "enduring thesaurus" https://smartdefine.org/enduring/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, enduring thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/enduring/thesaurus/synonyms>.
MLASmart Define. "enduring thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/enduring/thesaurus/synonyms>