v. i. To swear falsely; to commit perjury. Shak. [ 1913 Webster ]
v. t.
I . . . do forswear her. Shak. [ 1913 Webster ]
Like innocence, and as serenely bold
As truth, how loudly he forswears thy gold! Dryden. [ 1913 Webster ]
To forswear one's self,
n. One who rejects of renounces upon oath; one who swears a false oath. [ 1913 Webster ]