The term 'Final Warning' is an ULTIMATUM, which is a nine-letter word meaning a last demand or warning. It is usually issued as a threat of some kind of action if the demand is not met. This term is often used in legal and business contexts, where it is a warning that a certain action will be taken if a certain condition is not met. In other contexts, it can also be used to refer to a warning that something bad will happen if a certain behavior is not changed.