Definition of "lability" [la•bil•i•ty]

• The state of being labile (noun)
• A susceptibility to change; instability (noun)

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• "This instability of emotional expression is termed lability of affect."
• "The fact commentators think Bill is a lability is another indication that the punditocracy work from their own narrow view and ignore the world as it exists."
• "Sophisticated neuroimaging shows the brains of those who suffer from Post-Traumatic Stress Disorder to be abnormal in areas regulating memory retrieval and inhibition (hippocampus), fearfulness and focus (pre-frontal cortex), and emotionality and lability (amygdala)."