Labile a. : Liable to slip, err, fall, or apostatize.

Example:
What does the word Labile mean in this sentence?

Taxonomy
Labile affect, emotional lability, free encyclopedia, emotional expression, uncontrollably, symptom, disorder, Neurology, Brooks, pseudobulbar affect, laughter, sclerosis patients, search, incontinence, mood, incongruent, laugh, motor neuron disease.

Defination from the web:
Labile affect is most commonly observed after brain injury, people with dementia expressing a psychosis of some sort, or degeneration in ... Treatment for labile affect is usually pharmacological, using antidepressants such as fluoxetine, citalopram, or amitriptyline in low to moderate ...