Definitions

1. verb

to give up or renounce something, especially a habit or a right

“She foreswore her claim to the inheritance.”

2. verb

to solemnly declare that one will not do something, especially under penalty of punishment

“The accused foreswore telling the truth under oath.”

3. noun

a solemn renunciation or declaration of something

“The court required the defendant to take an oath of foreswear.”