Forswear/fɔːrˈswer/ Definition 1 of 3Pro Tip 1/3Commitment Intensity Using 'forswear' emphasizes a strong commitment to quitting a habit. After his health scare, he forswore junk food completely. Pro Tip 2/3Formal Context 'Forswear' is formal and might not be common in everyday conversation. In his speech, the mayor announced he would forswear any salary increase. Pro Tip 3/3Serious Undertaking The word 'forswear' implies a serious and often public declaration. She forswore her corporate career for a life of activism.