necessārius adj. necesse, unavoidable, inevitable, indispensable, pressing, needful, requisite, necessary, compulsory: conclusio: leges: causa ad proficiscendum, Cs.: locus huic disputationi necessarius de amicitiā, essential: castra ponere necessarium visum est, L.: necessariā re coactus, by necessity, Cs.: tam necessario tempore, time of need, Cs.: longius necessario procedere, too far, Cs.: ut dilucide narremus necessarium est.
— Plur n. as subst: ad necessaria ferenda, the necessaries of life, Cu.
—Connected by natural ties, belonging, related, connected, bound: homo (a father-in-law), N.
—As subst m. and f a relation, relative, kinsman, connection, friend, client, patron: sui, S.: meus familiaris ac necessarius: virgo huius propinqua et necessaria.