Adjective downhill has 1 sense
- declivitous, downhill, downward-sloping - sloping down rather steeply
Antonym: ascending (indirect, via descending)
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Adverbial downhill has 2 senses
- downhill - toward a lower or inferior state; "your performance has been going downhill for a long time now"
- downhill - toward the bottom of a hill; "running downhill, he gained a lot of speed"
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Noun downhill has 2 senses
- downhill - the downward slope of a hill
--1 is a kind of descent, declivity, fall, decline, declination, declension, downslope
- downhill - a ski race down a trail
--2 is a kind of ski race, skiing race
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