necessary (subs.) Copy link • necessary (subs.): expr. by nĕcessārius: the n.s of life, quae ad vivendum sunt necessaria, Cic. Off. 1, 4, init.: may also be expr. by, quae natura desiderat; (omnia) quae ad victum cultumque pertinent, Cic. Off. 1, 44, 158; quod ad usum vitae pertinet, ib. 3, 5, 22. Phr.: by this means the army was abundantly supplied with all n.s, quae res omnium rerum copia complevit exercitum, Caes. B. C. 2, 25, extr.: (barely) to obtain the n.s of life by manual labour, manuum mercede inopiam tolerare, Sall. Cat. 37: v. livelihood.