unpreventable From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsnounSomething that cannot be prevented.adjectiveNot preventable. Related wordsSynonymsnonpreventableimpreventableunpreventibleinevitablenonavoidableinavoidableunpreventiveunpremeditableavoidlessungetroundableunpreventedunavoidedinexorablenoninevitableunavertablenoncontrollable References Wiktionary — unpreventable Wikipedia — unpreventable