perjury Copy link • perjury: perjūrium: to be guilty of p., p. facere, Cic. Off. 3, 29, 108: to be tempted to p., ad p. perduci, id. R. Com. 16, 46. To commit p., pējĕro or perjūro (v. to perjure): he who is accustomed to lie has learnt how to commit p., qui mentiri solet, p. consuevit, Cic. R. Com. l. c.