To tend steadily upward or downward.

“The road slopes sharply down at that point.”

To form with a slope; to give an oblique or slanting direction to; to incline or slant.

“to slope the ground in a garden;   to slope a piece of cloth in cutting a garment”

(usually followed by a preposition) To try to move surreptitiously.

“I sloped in through the back door, hoping my boss wouldn't see me.”

An arrangement or motion by which something slopes.

Having a slope.

“a sloping roof”