Lewis & Short

prae-vārĭcor, ātus, 1, v. dep., to walk crookedly, not to walk straight.

  1. * I. Lit.: arator praevaricatur, makes a crooked furrow, Plin. 18, 19, 49, § 179.
  2. II. Trop.
    1. A. To walk crookedly in the discharge of one’s duty, not to act uprightly; esp. of an advocate who is guilty of collusion with the opposite party, to make a sham accusation or defence, to collude, prevaricate: qui praevaricatur, ex utrāque parte consistit, quinimo ex alterā, Dig. 47, 15, 1; cf. Plin. l. c. supra: a Catilina pecuniam accepit, ut turpissime praevaricaretur, Auct. Har. Resp. 20; Plin. Ep. 3, 9, 29.
      With dat., to favor collusively: interdum non defendere, sed praevaricari accusationi videbatur, Cic. Clu. 21, 58.
    2. B. Late Lat., to transgress, sin against, violate: pactum meum, Vulg. Jos. 7, 11: contra me, id. Deut. 32, 51: legem, id. Osee, 8, 1.
      Also in the form praevā-rĭco, āre: quod audivit, praevaricavit, Aug. Tract. in Joann. 99; cf. Prisc. 8, 6, 29.