declivity

Preposition: of

mountain: The most abrupt declivity of these mountains confronts the Zanzibar coast, but the western slopes are merely inclined planes.

Adjective modifier

• steep: In pursuing the diversion of hunting they will run full speed along the side of, or directly down the steepest declivities.
• gentle: But I was expecting a series of gentle declivities, some long, languorous curves, like Herne Hill in south London.
• southern: The whole face of the southern declivity was covered with wild shrubbery alone an occasional silver willow or white poplar excepted.
• northern: The numerous springs which rise from northern declivities supply every district of the county.
• rocky: In the dim light he forced his horse through a tangled thicket overhanging a steep and rocky declivity.
• western: The village of Balmerino is pleasantly situated on the western declivity of the Scurr hill, already mentioned.