necessario
From LSJ
Latin > English
necessario ADV :: unavoidably, without option; necessarily, of necessity; inevitably/unavoidably
Latin > English (Lewis & Short)
nĕcessārĭō: adv., v. necessarius.
Latin > German (Georges)
necessāriō, Adv. (necessarius), notwendigerweise, notgedrungen, Cornif. rhet., Cic. u.a.: verb. coactus n., Ter., coactus et n., Cic.