Lability:The state or quality of beinglabile: susceptible to change, error or instability. From the Latin labilis meaningproneto slip, from labi meaning to slip. See also: Labile. From Healthy Resources 10 Rheumatoid Arthritis Symptoms What Is Exocrine Pancreatic Insufficiency? Understanding COVID-19 Testing and Treatment Featured Centers What Are the Best PsA Treatments for You? Understanding Biologics 10 Things People With Depression Wish You Knew Health SolutionsFrom Our Sponsors Shot-Free MS Treatment Your Child and COVID-19