• IPA: /ə.ˈklɪv.ə.ti/

acclivity (plural acclivities)

1. (geomorphology) 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.
   • 1912 January, Zane Grey, chapter 8, in Riders of the Purple Sage: A Novel, New York, N.Y.; London: Harper & Brothers Publishers, OCLC 6868219 ↗:

     Just below it leaned a tottering crag that would have toppled, starting an avalanche on an acclivity where no sliding mass could stop.

• Portuguese: aclividade