no-fault • adj. not assigning fault or blame, in particular: ∎ denoting an insurance policy that is valid regardless of whether the policyholder was at fault: no-fault automobile insurance. ∎ denoting an insurance or compensation plan (esp. one covering medical or industrial accidents) whereby a claimant need not legally prove negligence against any party. ∎ of or denoting a form of divorce granted without requiring one party to prove that the other is to blame for the breakdown of the marriage.