uphill Definition

1. Sloping upwards; ascending.
2. Said of a task, etc: requiring great and sustained effort; arduous.

Thesaurus: tough, gruelling, arduous, punishing, strenuous, taxing, exhausting, laborious; Antonym: downhill, easy.

1. Up a slope.
2. Against problems or difficulties.

1. An upward slope; an ascent or incline.