perjure

verb

1. (reflexive)To knowingly and willfully make a false statement of witness while in court.

   “He perjured himself.”

2. (transitive)To cause to violate an oath or a vow; to cause to make oath knowingly to what is untrue; to make guilty of perjury; to forswear; to corrupt.

   “Want will perjure the ne'er-touched vestal.”

3. (transitive)To make a false oath to; to deceive by oaths and protestations.

   “And with a virgin innocence did pray / For me, that perjured her.”

noun

1. (obsolete)A perjured person.

   “He comes in like a perjure, wearing papers”