acclivitous, a.
(əˈklɪvɪtəs)
[f. acclivit-y + -ous; cf. calamity, calamit-ous. See -itous, -ous.]
Of the nature of, or characterized by an acclivity; having an upward slope.
| 1815 Paulson in Henderson Iceland 203 We continued our route up the S.E. side of the Yökul, where it was least acclivitous. 1879 Contemp. Rev. 507 Herds of agile creatures abounding in the acclivitous glades of the woods. |