3
mews
3
mighty(adjective, strong, sound, tough, solid)
3
moderate(adjective, calm, quiet, sound, reasonable)
3
muscular(adjective, strong, sound, tough, solid)
3
perdurable(adjective, tough, steady, fixed, sturdy)
3
persevering(adjective, strong, flat, determined, definite)
3
potent(adjective, strong, sound, tough, firm)
3
real(adjective, physical, material, genuine, actual)
3
resolved(adjective, strong, flat, determined, thoughtful)
3
rugged
3
serene(adjective, calm, quiet, smooth, soft)
3
silent(adjective, calm, quiet, smooth, tranquil)
3
sinewy(adjective, strong, sound, tough, solid)
3
single-minded(adjective, firm, solid, fixed, resolute)
3
steady-going(adjective, continue, firm, solid, steady)
3
straight(adjective, calm, direct, smooth, right)
3
sustainable
3
symmetrical(adjective, sensible, rational, even, reliable)
3
together(adjective, calm, sound, reasonable, firm)
3
true-blue(adjective, good, strong, honest, solid)
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APASmart Define. (2015). stable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/stable/thesaurus/synonyms
ChicagoSmart Define. 2015. "stable thesaurus" https://smartdefine.org/stable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, stable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/stable/thesaurus/synonyms>.
MLASmart Define. "stable thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/stable/thesaurus/synonyms>