for•swearPronunciation: (fôr-swâr'), [key]
—v., -swore, -sworn, -swearing.
to reject or renounce under oath: to forswear an injurious habit.
to deny vehemently or under oath.
to perjure (oneself).
to swear falsely; commit perjury.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.