1. going up a slope or incline
2. difficult and requiring great effort

1. toward higher ground; up a slope

1. an upward slope or incline

Examples

• The uphill climb to the summit was exhausting.
• Getting the project approved will be an uphill battle.
• The car struggled to drive uphill on the steep road.
• We walked uphill for two miles before reaching the cabin.
• The uphill section of the trail is the most challenging part.
• Convincing them to change their minds is going to be uphill work.
• The bicycle rolled backward down the uphill.