[adjective], [adverb] - leading to a higher place on a slope, or (figurative) needing a large amount of effortan uphill climbrunning uphill(figurative) It'll be an uphill struggle/battle/fight to get the new proposals accepted.Compare downhill.
UPHILL
Meaning of UPHILL in English
Cambridge English vocab. Кембриджский английский словарь. 2012