Etymology From Old French parjurer, from Latin periūrō.
1
To knowingly and willfully make a false statement of witness while in court.
He perjured himself.
2
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.c. 1606–1607 (date written), William Shakespeare, “The Tragedie of Anthonie and Cleopatra”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act III, scene xii]:
3
To make a false oath to; to deceive by oaths and protestations.
And with a virgin innocence did pray / For me, that perjured her.1608, John Fletcher, The Faithful Shepherdess:
He comes in like a perjure, wearing papersc. 1595–1596 (date written), William Shakespeare, “Loues Labour’s Lost”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act IV, scene iii]: