| | Conditions Treatments | Chronic Fatigue Syndrome What is a synonym for chronic? Some possible synonyms for "chronic" are: - inveterate - habitual - persistent - recurrent - relentless Chronic Fatigue Syndrome - Related Articles What Are Benefits of DNA Fingerprinting? Should you have your tooth pulled or filled? Sauna Exercises How do I Donate Plasma in Tempe, AZ? Hazards of Chlorinated Brake Cleaner What Is the Apple Patch Diet? Can a pregnant woman use muster seed?