necessāriō adv.
necessarius, unavoidably, inevitably : coacti necessario se aperiunt, T.: dicendum est: rem Caesari enuntiare, Cs.: copias parat, S.
nĕcessārĭō, adv., v. necessarius fin. 2. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.