Meanings
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1
verb
to knowingly make a false statement under oath and thereby commit perjury, usually used reflexively
The witness would perjure herself if she repeated the claim under oath.
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2
verb
to cause someone to violate an oath or swear falsely; now rare
The conspirators tried to perjure the official by forcing him to swear to a false account.
Thesaurus
Etymology
From Old French parjurer and Latin periurare, 'to swear falsely,' formed from per- in a sense of wrongdoing and iurare, 'to swear,' from ius or iuris, 'law or right.'