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.

1. infirmo, āvi, ātum, 1, v. a. and n. [infirmus].

  1. I. Act., to deprive of strength, to weaken, enfeeble.
    1. A. Lit.: legiones, Tac. A. 15, 10: munimenta madore, Sall. Fragm. ap. Non. 138, 6: hominem, Cels. 2, 12.
    2. B. Trop.
        1. a. To invalidate, disprove, refute: res tam leves infirmare ac diluere, Cic. Rosc. Am. 15, 42; with tollere, id. N. D. 2, 59, 147; with frangere, id. de Or. 131: fidem testis, id. Rosc. Com. 15, 45: fidem alicui, id. Att. 15, 26.
        2. b. To annul, make void: legem, Liv. 34, 3; Quint. 7, 1, 49: contractum, Dig. 49, 14, 46: graviter ferens aliquid a se factum infirmari, Vell. 2, 2, 1: acta illa atque omnes res superioris anni, Cic. Sest. 18, 40.
  2. II. Neutr. only in part. pres. as subst.: infirmantes, um, m., the weak, sick, Sulp. Sev. Vit. S. Mart. 18, 5; id. Ep. 2, 12.

2. in-firmo, āvi, ātum, 1, v. a., to establish in, fix, or confirm in (late Lat.), Cael. Aur. Acut. 3, 4, 36.

in-firmus, a, um (post-class. infir-mis, e, Amm. 20, 6), adj., not strong, weak, feeble.

  1. I. Lit.: viribus infirmis, Cic. Verr. 2, 4, 43, § 95: valetudo, id. Brut. 48, 180: classis inops et infirma, id. Verr. 2, 5, 33, § 86: valetudo infirmissima, id. de Or. 1, 45.
    Hence, infirm, indisposed, sick: sum admodum infirmus, Cic. Ac. 1, 4, 14; Plin. Ep. 7, 26: pecus, i. e. sheep, Ov. Ib. 44: lumen solis, weak, feeble, Luc. 5, 545: infirmior est panis ex polline, less nourishing, Cels. 2, 18: infirmissimus cibarius panis, id. ib.: saporis vinum, Col. 3, 7: infirmissimae arbores, Plin. 17, 24, 37, § 217: nervi, weak, id. 23, 2, 28, § 59: civitas exigua et infirma, Caes. B. G. 7, 17.
    With ad: infirmi ad resistendum, Caes. B. C. 3, 9, 3: infirmior ad haec omnia, Plin. 36, 20, 37, § 145.
    With adversus: fama, infirmissimum adversus viros fortes telum, Curt. 4, 14.
    In neutr. pl. subst.: infirma, ōrum, the weak parts: lineae, Plin. 9, 43, 67, § 145.
  2. II. Trop., weak in mind or character, superstitious, pusillanimous, inconstant, light-minded: tenuis atque infirmi haec animi videri, Caes. B. C. 1, 32: quippe minuti Semper et infirmi est animi voluptas ultio, Juv. 13, 190: sum paulo infirmior, Hor. S. 1, 9, 71: quorum concursu terrentur infirmiores, Caes. B. C. 1, 3, 5: homines infirmissimi, very uncertain, not to be depended on, Col. 3, 10, 6.
    Of things, of no weight or consequence, weak, trivial, inconclusive: omnino ad probandum utraque res infirma et nugatoria est, Cic. Caecin. 23, 64: quod apud omnes leve et infirmum est, id. Rosc. Com. 2, 6: cautiones, id. Fam. 7, 18: infirmiore vinculo (amicitiae) contrahi, Liv. 7, 30, 2.
    Hence, advv.
    1. A. Form infirmē.
      1. 1. Weakly, faintly, not strongly, not very: infirme animatus, Cic. Fam. 15, 1, 3.
        Of speech, feebly, without vigor of expression: jejune et infirme, Plin. Ep. 1, 20, 21.
      2. 2. Weak-mindedly, superstitiously: tonitrua et fulgura paulo infirmius expavescebat, Suet. Aug. 9.
    2. B. Form infirmĭter, weakly, feebly, without energy: infirmiter invalideque dicere, Arn. 7, 250.