for·swear /fōr-'swar/ vb -swore /-'swōr/, -sworn, /-'swōrn/, -swear·ing
vt
1: to reject, renounce, or deny under oath
2: to renounce earnestly
vi: to swear falsely: commit false swearing
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.