downhill

nouns

the downward slope of a hill
downhill
is a type of (narrower)
a downward slope or bend
declension, declination, decline, declivity, descent, downslope, fall
a ski race down a trail
downhill
is a type of (narrower)
a race between people wearing skis
ski race, skiing race

adjectives

sloping down rather steeply
declivitous, downhill, downward-sloping

adverbs

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"
downhill