forswear /fə(ɹ)ˈswɛə(ɹ)/ verb2 •To renounce or deny something, especially under oath.We forswear allegiance and support for the Economic Freedom Fighters. •[with oneself] To commit perjury; to break an oath. formsforswore · forsworn · forswearing · forsweareth · forswears · forswearest