per-nĕcessārĭus — Lewis & Short
per-nĕcessārĭus, a, um, adj.
I Very necessary:
tempus,Cic. Att. 5, 21, 1:
res,Dig. 4, 4, 11, § 4.—
II Very closely connected with one:
amicus,Cic. Fl. 6, 14:
homo,id. de Or. 2, 50, 202; cf.:
pro homine intimo ac mihi pernecessario,id. Fam. 13, 69.—Subst.:
meus familiaris et Leptae nostri familiarissimi pernecessarius,Cic. Fam. 9, 13, 1:
meos,id. ib. 13, 40.