underinsurance n1 : insufficient insurance
2 : insurance coverage protecting usually against uninsured or underinsured motorists by compensating the insured if the tortfeasor's liability policy limits fall short of the insured's losses
: insurance providing uninsured motorist coverage
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.