Antonyms of noun variability

2 senses of variability

Sense 1
variability, variableness, variance -- (the quality of being subject to variation)
       Antonym of invariability (Sense 2)
      => invariability, invariableness, invariance -- (the quality of being resistant to variation)

Sense 2
unevenness, variability -- (the quality of being uneven and lacking uniformity)
       Antonym of invariability (Sense 1)
      => evenness, invariability -- (a quality of uniformity and lack of variation)

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

2 senses of variability

Sense 1
variability, variableness, variance -- (the quality of being subject to variation)
       => changeableness, changeability -- (the quality of being changeable; having a marked tendency to change; "the changeableness of the weather")

Sense 2
unevenness, variability -- (the quality of being uneven and lacking uniformity)
       => irregularity, unregularity -- (not characterized by a fixed principle or rate; at irregular intervals)