uphill
US /ˌʌpˈhɪl/
UK /ˌʌpˈhɪl/

1.
towards a higher place or level
:
•
The road goes steeply uphill.
•
We had to push the car uphill.
1.
sloping up a hill
:
•
It was an uphill climb to the summit.
•
The path became steeper as we continued our uphill journey.
2.
difficult and requiring a lot of effort
:
•
It's an uphill battle to change public opinion.
•
He faces an uphill task to complete the project on time.