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.

adjective

downhill , easy , facile

adjective

acclivous , ascending , climbing , mounting , rising , skyward , sloping upward , toward summit , up , uprising , arduous , effortful , exhausting , grueling , hard , labored , operose , punishing , rugged , strenuous , taxing , toilsome , tough , wearisome , laborious , serious , tall , difficult , tiring