down the slope of a hill; downward.

into a worse or inferior condition

The business has been going downhill.

going or tending downward on or as on a hill.

free of problems or obstacles; easy

After the initial setbacks on the project, it was downhill all the way.

of or pertaining to skiing downhill.

a timed ski race on a steep slope in which competitors take the most direct route to the finish line following a course with relatively few turns and attaining very high speeds.

adjective

declining , dipping , dropping , falling , sloping downward