forswearPronunciation: /fɔːˈswɛː, fə-/Translate forswear | into Italian Definition of forswear verb (past forswore /-ˈswɔː/; past participle forsworn /-ˈswɔːn/) [with object] 1 formal agree to give up or do without:the country has not forsworn nuclear weapons 2 (forswear oneself/be forsworn) archaic commit perjury; swear falsely: I swore that I would lead us safely home and I do not mean to be forswornOrigin: Old English forswerian (see for-, swear)forswear in other Oxford dictionaries Definition of forswear in the US English dictionary