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.

nĕcessārĭus, a, um, adj. (comp. necessarior, Tert. Patient. 11; id. Test. Anim. 4 al.) [necesse], unavoidable, inevitable, indispensable, needful, requisite, necessary: necessarium ait esse Opilius Aurelius, in quo non sit cessandum, aut sine quo vivi non possit: aut sine quo non bene vivatur: aut quod non possit prohiberi, quin fiat, Paul. ex Fest. p. 162 Müll.

  1. I. Lit.: necessarius et fatalis, opp. voluntarius, Cic. Phil. 10, 9, 9; cf.: id quod imperatur necessarium; illud, quod permittitur, voluntarium est, id. Inv. 2, 49, 145: necessaria conclusio, id. Top. 16, 60: leges fatales et necessariae, id. Univ. 12: omnia quae sint ad vivendum necessaria, id. Off. 1, 4, 11: senatori necessarium est, nōsse rem publicam, id. Leg. 3, 18, 41.
    So without dat., = necesse est: ne tam necessarium quidem est male meritis quam optime referre quod debeas, id. post Red. ad Quir. 9, 22: castra ponere necessarium visum est, Liv. 21, 58, 6; Plin. Ep. 10, 37, 3; Gai. Inst. 3, 216: necessariā re coactus, by necessity, Caes. B. C. 1, 40: quod tam necessario tempore ab iis non sublevetur, time of need or necessity, id. B. G. 1, 16: cum longius necessario procederent, farther than was necessary, too far, id. ib. 7, 16: res magis necessariae, Cic. Inv. 2, 49, 145: res maxime necessaria, id. Fam. 2, 6, 2: necessarior medela, Tert. Patient. 11: necessarior sententia, id. Test. Anim. 4: necessariores operas, id. Cult. Tem. 1, 5; id. Res. Carn. 31: aliquid necessarius, id. Carn. Christ. 7 med.
    Subst.: nĕcessā-rĭa, ōrum, n., the necessaries of life: Persae armis positis ad necessaria ex proximo vico ferenda discurrunt, Curt. 5, 12, 6: plebes sic adcensa uti … sua necessaria post illius honorem ducerent, Sall. J. 73, 6; Front. Strat. 3, 14, 4.
    1. * B. In partic.: necessariae partes, the private parts, Gai. Inst. 3, § 193.
  2. II. Transf., connected with another by natural or moral ties (of blood, friendship, clientship), belonging, related, connected, bound.
          1. (α) Adj.: cum utrique sis maxime necessarius, Balb. et Opp. ap. Cic. Att. 9, 7, A: victoria hominis necessarii, of a friend, Mat. ap. Cic. Fam. 11, 28, 2; so, homo, of a father-in-law, Nep. Dat. 6: ut a latronibus redimeret necessarias mulieri personas, Dig. 24, 3, 21: necessarius heres = suus heres, the natural heir, who was in the potestas of the deceased (opp. to heres extraneus), Gai. Inst. 2, 37; 3, 153; 156; Dig. 38, 16, 1.
          2. (β) Subst.: nĕ-cessārĭus, i, m., a relation, relative, kinsman, connection, friend, client, patron (cf. necessitudo, II.; syn.: familiaris, intimus): necessarii sunt, ut Gallus Aelius ait, qui aut cognati aut affines sunt, in quos necessaria officia conferuntur praeter ceteros, Paul. ex Fest. p. 162 Müll.; necessarius angustus, a very near relative, Fragm. Jur. Civ. p. 86 Mai.: L. Torquatus meus familiaris ac necessarius, Cic. Sull. 1, 2: in iis necessariis, qui tibi a patre relicti sunt, me tibi esse vel conjunctissimum, id. Fam. 13, 29, 1: nĕcessārĭa, ae, f., a female relative or friend: virgo Vestalis hujus propinqua et necessaria, id. Mur. 35, 73: Cerelliae, necessariae meae, rem commendavi tibi, id. Fam. 13, 72, 1.
            Hence, adv.
      1. 1. nĕcessārĭē (rare), unavoidably, necessarily: necessarie demonstrari, Cic. Inv. 1, 29, 44: comparato cibo, Val. Max. 7, 6, 3.
      2. 2. nĕcessārĭō (the most usual form): necessario reviviscere, Cic. Fam. 6, 10, 5: quibuscum vivo necessario, id. ib. 5, 21, 1: quod necessario rem Caesari enuntiārit, Caes. B. G. 1, 17: copias parat, Sall. J. 21, 1; Quint. 10, 1, 29; 5, 10, 80; Lact. 2, 12.