undefendable From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsadjectiveNot capable of being defended Related wordsSynonymsundefendedvulnerableassailableopenindefensibleundefensibleunrebuttableindefensiveundefeatableunwarrantableunthreatenableunexpugnableunprotectibleundefensedunchallengeableunoffendable References Wiktionary — undefendable Wikipedia — undefendable