acclivity /əˈklɪv.ə.ti/ noun1 •A slope or inclination of the earth, as the side of a hill, considered as ascending, in opposition to declivity, or descending; an upward slope; ascent.she would walk […] as far as to the point where the acclivity from the valley began its first steep ascent to the outer world. — 1891 formsacclivities
