ac-clīvis — Lewis & Short
ac-clīvis, e, also (but much less freq.) -vus, a, um, adj.ad + clivus,
I up hill, mounting upwards, ascending, steep: stadium, Lucil. ap. Non. 4, 11:
ea viae pars valde acclivis est,Cic. Q. Fr. 3, 1, 2, § 4; so,
leniter acclivis aditus,Caes. B. G. 2, 29 al.: acclivus, Ov. M. 2, 19.