An area of ground that tends evenly upward or downward.
"The hikers struggled to climb the steep slope leading up to the mountain peak."
In plain English: Slope is how steep something goes up or down, like the angle of a hill.
"The steep slope made it difficult for us to walk up without slipping."
Usage: Use the noun form to describe an inclined surface, such as a hillside or roof section, rather than referring to steepness itself. When describing how something changes over time, use the verb slope instead of synonyms like rise or fall if you want to emphasize a gradual angle.
To tend steadily upward or downward.
"The road slopes gently uphill toward the mountain peak."
In plain English: To slope means to go down at an angle instead of staying flat.
"The snow began to slope down from the roof into the gutter during the heavy thaw."
Sloping.
"The roof has a steep slope to help shed the snow quickly."
slopingly
"The steep hill rose slope, making it difficult to walk up without slipping."
The word slope comes from Middle English asloped, which meant lying at an angle or being slanted. It entered modern usage to describe any surface that is not level.