(verb) : prō-sum, fŭi, prōdesse
* To be useful or of use, to do good, benefit, profit.
* In gen., constr. with dat., a subjectclause, or absol., rarely with ad or in and acc.: sibi prodesse, Enn. ap. Cic. Fam. 7, 6, 2 (Trag. v. 310 Vahl.); cf.: qui nec sibi nec alteri prosunt,Cic. Off. 2, 10, 36: multis,id. Lael. 1, 4: nihil tibi litterae meae proderunt,id. Fam. 2, 17, 7.—With subj.-clause: multum prodest ea quae metuuntur ipsa contemnere,Cic. Tusc. 4, 30, 64: iis carum et jucundum esse maxime prodest,Q. Cic. Petit. Cons. 5, 16; cf. id. ib. 11, 43: quid mihi fingere prodest?Ov. M. 13, 935: nec quicquam tibi prodest Aërias tentasse domos,Hor. C. 1, 28, 4; id. Epod. 17, 60; id. S. 1, 2, 113: quae scire magis juvat quam prodest,Sen. Ep. 106, 3.—Absol.: prodesse aequom est,Ter. Ad. 5, 9, 11: quorum altera prosunt, Cin. Fin. 3, 21, 69: studia aliena ac nihil profutura,Sall. J. 1, 5: magis tamen Menenianum profuit judicium,Liv. 2, 52; Quint. 4, 1, 3; 11, 1, 9: quae nocuere sequar, fugiam quae profore credam,Hor. Ep. 1, 8, 11: aut prodesse volunt aut delectare poëtae,id. A. P. 333: tu tantum corpore prodes, Nos animo,Ov. M. 13, 365.— With ad or in and acc.: id mirum, quantum profuit ad concordiam civitatis,Liv. 2, 1: in id quoque prodest, ut, etc.,Quint. 8, 3, 9: in commune,id. 6, 1, 7.—With abl.: constantia multum prodest in amore,Prop. 2, 26, 27.
* In partic., of medicines, to be good, be beneficial: fabam voci prodesse,Plin. 22, 25, 69, § 141: balineum assumo, quia prodest,Plin. Ep. 7, 21, 3: ad tormina,Plin. 22, 25, 63, § 131: contra ignem sacrum,id. 20, 7, 25, § 59.—With inf.: contra anginas tritum in poscā gargarizare prodest,Plin. 20, 6, 23, § 52.

prōsum, = prorsum, q. v.

s. TLL

s. TLL