1. uls — de Vaan
uls 'on the far side of, beyond' [prep. + ace] (Varro, Gel, Paul, ex F.) Derivatives: ulterior (P1.+) 'farther away'; ultra 'to a point farther off, conversely' (Naev.+); ultra (Cato+) 'on the far side, beyond'; ultimus 'farthest away' (P1.+). Pit *ol-tero-, *ο!-ίωηο-. It. cognates: (λ ultiumam [acc.sg.f.] Mast'. PIE *h2ol-tero- ''further', *h2ol-tmHo- 'furthest, last'. IE cognates: see s.v. olle. The prep, uls is … — [de Vaan, s.v. uls, p. 652]