Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

perpĕram and perpĕrē, advv., v. perperus fin.

† perpĕrus, a, um, adj., = πέρπερος (prop. heedless, inconsiderate; hence, in gen.), not properly constituted, faulty, defective, wrong (as adj. only ante- and postclass.): populares, Att. ap. Non. 150, 12: nihil perperum, Vop. Tac. 6 (dub.; al. praeproperum).
Hence, adv.

  1. A. perpĕram (adv. acc. fem. like clam, coram, palam; and in the plur. alias, alteras), wrongly, incorrectly, untruly, falsely (class.): loqui, Plaut. Am. 1, 1, 92: suadere aliquid, id. Capt. 2, 2, 78: insanire, id. Men. 5, 5, 59: dicere aliquid, Ter. Phorm. 5, 1, 18 (Serv. ad loc.): si aspires perperam, Nigid. ap. Gell. 13, 6, 3: seu recte, seu perperam fecerunt, Cic. Quint. 8, 31: recte an perperam judicare, id. Caecin. 24, 69: interpretari, Liv. 1, 23; Sen. Ep. 9, 13; Suet. Aug. 92: pronunciare, Plin. Ep. 3, 5, 12.
    1. 2. In a milder signif., erroneously, by mistake: ita dico, ne ad alias aedis perperam deveneris, Plaut. Most. 4, 2, 52; Varr. R. R. 1, 69, 2: perperam praeco non consulem, sed imperatorem pronunciavit, Suet. Dom. 10; Auct. B. Hisp. 12.
  2. B. perpĕrē, wrongly, falsely: opiniones perpere praesumptae, Claud. Mam. Stat. Anim. 1, 1.