Antonyms of noun instability

2 of 4 senses of instability

Sense 1
instability -- (an unstable order)
       Antonym of stability (Sense 2)
      => stability -- (a stable order (especially of society))

Sense 4
instability, unstableness -- (the quality or attribute of being unstable and irresolute)
       Antonym of stability (Sense 1)
      => stability, stableness -- (the quality or attribute of being firm and steadfast)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun instability

4 senses of instability

Sense 1
instability -- (an unstable order)
       => disorder -- (a disturbance of the peace or of public order)

Sense 2
instability -- (unreliability attributable to being unstable)
       => undependability, undependableness, unreliability, unreliableness -- (the trait of not being dependable or reliable)

Sense 3
imbalance, instability, unbalance -- (a lack of balance or state of disequilibrium; "a hormonal imbalance")
       => disequilibrium -- (loss of equilibrium attributable to an unstable situation in which some forces outweigh others)

Sense 4
instability, unstableness -- (the quality or attribute of being unstable and irresolute)
       => unsteadiness -- (the quality of being unsteady--varying and unpredictable)