Synonyms|584Antonyms|103|Broader|10Narrower|6Related|252
19
permanence
10
stability(noun, resistance)
9
balance(noun, difference, stability, equilibrium)
6
constancy(noun, weakness, lying, stability, wavering)
6
firmness
5
soundness(noun, stability)
5
stableness
5
steadiness
4
equilibrium
4
fixedness
4
security
4
steadfastness(noun, stability)
4
strength(noun, inactivity)
3
haven
3
sanity(noun, health, mistake, insanity, soundness)
3
substantiality
2
unchangeableness(weakness, lying, wavering)
2
ballast
2
self-confidence
1
changelessness
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APASmart Define. (2015). instability thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/instability/thesaurus/antonyms
ChicagoSmart Define. 2015. "instability thesaurus" https://smartdefine.org/instability/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2015, instability thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/instability/thesaurus/antonyms>.
MLASmart Define. "instability thesaurus" 23 December 2015. Web. 21 September 2026. <https://smartdefine.org/instability/thesaurus/antonyms>