to have or take an inclined or oblique direction or angle considered with reference to a vertical or horizontal plane; slant.

to move at an inclination or obliquely

They sloped gradually westward.

to direct at a slant or inclination; incline from the horizontal or vertical

The sun sloped its beams.

to form with a slope or slant

to slope an embankment.

ground that has a natural incline, as the side of a hill.

inclination or slant, esp. downward or upward.

deviation from the horizontal or vertical.

an inclined surface.

Usually, slopes. hills, esp. foothills or bluffs

the slopes of Mt. Kilimanjaro.

Mathematics .

the tangent of the angle between a given straight line and the x- axis of a system of Cartesian coordinates.

the derivative of the function whose graph is a given curve evaluated at a designated point.

Slang

Disparaging and Offensive an Asian, esp. a Vietnamese.

slope off

Chiefly British Slang . to make one's way out slowly or furtively.

adjective

acclivous , askew , aslant , declivous , downhill , inclined , leaning , oblique , pitched , slanting , supine , tilted