148 entries under fixed topic. ×

5
motionless(adjective, calm, dull, quiet, strong)
5
poised(adjective, calm, quiet, easy, firm)
5
sensible(adjective, sound, reasonable, moderate, firm)
5
still(adjective, calm, dull, quiet, secure)
5
unbroken(adjective, calm, quiet, direct, smooth)
5
unswerving(adjective, firm, solid, resolute)
5
well-founded(adjective, strong, sound, secure, tough)
4
continuing(adjective, unaffected, lasting, permanent)
4
cool(adjective, calm, quiet, sound, reasonable)
4
frozen(adjective, calm, quiet, hard, still)
4
imperturbable(adjective, calm, smooth, firm, solid)
4
inactive(adjective, action, calm, mild, still)
4
monotonous(adjective, quiet, soft, gentle, flat)
4
sober(adjective, calm, quiet, sound, reasonable)
4
unfaltering(adjective, firm, solid, steady, regular)
4
well-built(adjective, strong, sound, tough, firm)
3
perdurable(adjective, tough, steady, sturdy)
3
serene(adjective, calm, quiet, smooth, soft)
3
single-minded(adjective, firm, solid, resolute)
3
steady-going(adjective, continue, firm, solid, steady)
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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>