Answer: uphill

AnswerCrossword Clue
UPHILLDifficult.
uphillan upward slope
uphillIn an ascending direction up a hill or slope
UPHILLKind of battle
UPHILLLike a difficult battle
UPHILLArduous, as a battle
UPHILLType of battle
UPHILLKind of ascent
UPHILLLike an arduous battle
UPHILLLike a tough battle
UPHILLDifficult
UPHILLAgainst difficulties
UPHILLLaborious.
UPHILLArduous
UPHILLTowards higher ground
UPHILLTough to cycle on
UPHILLToward the mountain's peak
UPHILLToward the summit
UPHILLLike some battles
UPHILLLike Jack and Jill's path
UPHILLLike difficult struggles
UPHILLLaborious