up or as if up the slope of a hill
or other incline; upward: The soldiers marched uphill. Water does not run uphill without assistance.
going or tending upward on or as if on a hill
: an uphill road.
at a high place or point: an uphill village.
laboriously fatiguing or difficult: an uphill struggle to become wealthy.
a rising terrain; ascent.
4. arduous, hard, strenuous, taxing, grueling.