Lewis & Short

ex-prōmo, mpsi (msi), mptum (mtum), 3, v. a., to take out or forth, to draw out, fetch out, bring forth (syn. proferre).

  1. I. Lit. (rare): heminas octo in urceum, Plaut. Mil. 3, 2, 18: mox inde sensim ad mandendum manibus expromit, Plin. 10, 72, 93, § 199: maestas voces, Verg. A. 2, 280.
  2. II. Trop., to show forth, discover, exert, practise, exhibit, display (class.; syn. proferre).
    1. A. In gen.: exprome benignum ex tete ingenium, Plaut. Mil. 4, 2, 64; cf.: quidquid est incoctum non expromet, bene coctum dabit, id. ib. 2, 2, 53: supplicia in civis Romanos, Cic. Verr. 2, 5, 53, § 139: in meo inimico crudelitatem exprompsisti tuam, id. Mil. 13, 33: vim eloquentiae in ea causa, id. Or. 36, 125: omnem industriam vitae et vigilandi laborem in antelucanis cenis, id. Cat. 2, 10, 22: suum odium, id. Att. 2, 12, 2: sed quid ego vestram crudelitatem expromo, id. Dom. 23, 60: vel hilarissimum convivam hinc indidem expromam tibi, I’ll show myself to you, Plaut. Mil. 3, 1, 72. (In Plaut. Bacch. 4, 4, 9, promat, v. Ritschl ad h. l.)
    2. B. In partic., of speech, to utter, disclose, declare, state (syn.: exponere, narrare, etc.): occulta apud amicum, Ter. Heaut. 3, 3, 14: sed jam exprome, si placet, istas leges de religione, Cic. Leg. 2, 7, 17: sententiam, Tac. A. 12, 9: multas mente querelas, Cat. 64, 223: causas, Ov. F. 3, 725 et saep.
      With acc. and inf. or rel.-clause as object: expromit, repertum in agro suo specum altitudine immensa, Tac. A. 16, 1: quid in quamque sententiam dici possit, expromere, Cic. Div. 2, 72, 150: expromerent, quid sentirent, Liv. 29, 1, 7: indignationem expromens, Vell. 2, 19.
      Hence, expromptus, a, um, P. a., ready, at hand: nunc opus est tua mihi exprompta malitia atque astutia, Ter. And. 4, 3, 8.