LATIN DICTIONARYLexicon Latīnum
verbirregular conjugation, suppletive, no passive, no supine stem except in the future active participle, no gerund

prōsum

prōsum (present infinitive prōdesse, perfect active prōfuī, future active participle prōfutūrus)
Classical[ˈproː.sũː]Ecclesiastical[ˈprɔː.s̬um]
№ 373 of the 1,000 commonest wordsMille Verba core vocabulary

Meaning

  1. suppletiveto be useful or of use, do good, help, benefit, profit
    Nocere facile est, prodesse difficile.It is easy to do harm, difficult to do good.c. 95 CE, Quintilianus, Institutio oratoria
    Serit arbores, quae alteri saeclo prosintPlant the trees, so that they may serve another generationCicero, Cato maior de senectute, VII, 24
  2. suppletiveto serve
  3. suppletiveto be good or beneficial
    proderit et tunsum gallae admiscere saporem […]It is good too to blend a taste of pounded oak-apples […]c. 37 BCE – 30 BCE, Vergilius, Georgicon 4.267

Latīnē defined in Latin in our graded readers

Conjugation future irregular no supine

active indicative
formpresentimperfectfutureperfectpluperfectfut. perfect
1st sg.prōsumprōderamprōderōprōfuīprōfueramprōfuerō
2nd sg.prōdesprōderāsprōderis
prōdere
prōfuistīprōfuerāsprōfueris
3rd sg.prōdestprōderatprōderitprōfuitprōfueratprōfuerit
1st pl.prōsumusprōderāmusprōderimusprōfuimusprōfuerāmusprōfuerimus
2nd pl.prōdestisprōderātisprōderitisprōfuistisprōfuerātisprōfueritis
3rd pl.prōsuntprōderantprōderuntprōfuērunt
prōfuēre
prōfuerantprōfuerint
active subjunctive
active subjunctive
formpresentimperfectperfectpluperfect
1st sg.prōsim
prōsiem, prōfuam
prōdessem
prōforem
prōfuerimprōfuissem
2nd sg.prōsīs
prōsiēs, prōfuās
prōdessēs
prōforēs
prōfuerīsprōfuissēs
3rd sg.prōsit
prōsiet, prōfuat
prōdesset
prōforet
prōfueritprōfuisset
1st pl.prōsīmus
prōsiēmus, prōfuāmus
prōdessēmus
prōforēmus
prōfuerīmusprōfuissēmus
2nd pl.prōsītis
prōsiētis, prōfuātis
prōdessētis
prōforētis
prōfuerītisprōfuissētis
3rd pl.prōsint
prōsient, prōfuant
prōdessent
prōforent
prōfuerintprōfuissent
imperative
imperative
formactivepassive
pres. 2nd sg.prōdes—
pres. 2nd pl.prōdeste—
fut. 2nd sg.prōdestō—
fut. 3rd sg.prōdestō—
fut. 2nd pl.prōdestōte—
fut. 3rd pl.prōsuntō—
infinitives & participles
infinitives & participles
formactivepassive
present infinitiveprōdesse—
perfect infinitiveprōfuisse—
future infinitiveprōfutūrum esse
prōfore
—
future participleprōfutūrus
prōfutūra, prōfutūrā, prōfutūrae, prōfutūram, prōfutūrārum, prōfutūrās, prōfutūre, prōfutūrī, prōfutūrīs, prōfutūrō, prōfutūrōrum, prōfutūrōs, prōfutūrum
—

Phrases from Meissner's Latin Phrase-Book

fidem prodere
to break one's word.
exemplum edere, prodere
to set an example.
nomen suum posteritati aliqua re commendare, propagare, prodere
to win renown amongst posterity by some act.

prō-sum, fŭi, prōdesse, v. n.,
I. to be useful or of use, to do good, benefit, profit.
I. 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.—
II. 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.

Origins

From prō- + sum (“to be”). See also probus.

German
  • Englishprositfrom unknown prosit
  • Basqueprostfrom unknown prosit
  • Estonianproositfrom unknown prosit
  • unknownprost
Elsewhere
  • Italianprosit
  • Dutchproost
  • Danishprosit
  • Malteseprosit
  • Norwegian Bokmålprosit
  • Norwegian Nynorskprosit
  • Sicilianpròsita
  • Swedishprosit

Quick answers

What does prōsum mean in Latin?
prōsum, a verb, means “to be useful or of use, do good, help, benefit, profit; to serve; to be good or beneficial”.
What are the principal parts of prōsum?
prōsum, prōdesse, prōfuī, prōfutūrus (irregular conjugation, suppletive, no passive, no supine stem except in the future active participle, no gerund).
How do you pronounce prōsum?
In classical Latin, [ˈproː.sũː]; in ecclesiastical (church) Latin, [ˈprɔː.s̬um].