Definitions

1. adverb

in a direction or manner that goes upward from a lower to a higher place

“The hikers had to climb uphill to reach the summit.”

2. noun

a slope or incline that rises upward from a lower to a higher place

“The road to the village was an uphill climb for the tourists.”

3. adjective

relating to or involving movement upward from a lower to a higher place

“The uphill battle to raise funds for the charity was long and difficult.”