downhill >> /ˈdaʊnˌhɪl/
Definition: [noun] The fastest of the disciplines of alpine skiing.
Definition: [noun] A rapid descent of a hill in related sports, especially in alpine skiing.
Definition: [verb] To take part in downhill skiing.
Definition: [adjective] Located down a slope or hill.
Definition: [adjective] Going down a slope or a hill.
Definition: [adjective] (by extension) Easy.
Definition: [adjective] (by extension) Deteriorating, getting worse.
Example: After Don made those tasteless remarks, our relationship with him went downhill.
Definition: [adverb] Down a slope.
Example: Because we got to the summit of the mountain, we could only go downhill from there.