8
pen(place, abode)
8
responsible(adjective, good, strong, solid, true)
7
certain(adjective, good, strong, easy, firm)
7
coop(place, abode)
7
everlasting(adjective, quality, steady, persistent, constant)
7
faithful(adjective, good, strong, sound, firm)
7
immobile(adjective, calm, dull, strong, secure)
7
methodical(adjective, calm, smooth, steady, temperate)
7
normal(adjective, sound, reasonable, clean, sensible)
7
rational(adjective, sound, reasonable, sensible, normal)
7
reasonable(adjective, calm, quiet, sound, moderate)
7
sane(adjective, sound, complete, reasonable, sensible)
7
trustworthy(adjective, good, strong, sound, honest)
7
unfailing(adjective, good, strong, solid, true)
6
ordered(adjective, even, rigid, inflexible, consistent)
6
perennial(adjective, constant, stability, enduring, lasting)
6
powerful(adjective, strong, sound, tough, solid)
6
stall(noun, abode, trough)
6
stalwart(adjective, strong, sound, tough, firm)
6
temperate(adjective, calm, smooth, reasonable, moderate)
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APASmart Define. (2015). stable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/stable/thesaurus/synonyms
ChicagoSmart Define. 2015. "stable thesaurus" https://smartdefine.org/stable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, stable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/stable/thesaurus/synonyms>.
MLASmart Define. "stable thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/stable/thesaurus/synonyms>