1. (adv.) Upwards on, or as on, a hillside; as, to walk uphill.

2. (a.) Ascending; going up; as, an uphill road.

3. (a.) Attended with labor; difficult; as, uphill work.

Herculean abruptness abstruse acclinate acclivitous acclivity anabasis anabatic arduous ascendant ascending ascension ascensional ascensive ascent aslant aslantwise aslope at a slant atilt backbreaking brutal burdensome clamber climb climbing complex critical crushing delicate demanding difficile difficult downgrade downhill effortful elevation escalade exacting forced formidable fountain grueling gush gyring up hairy hard hard-earned hard-fought heavenward heavy hefty in the ascendant increase intricate jawbreaking jet jump killing knotted knotty labored laborious leap leaping levitation mean mount mounting no picnic not easy off plumb onerous operose oppressive painful precipitousness punishing rakingly rampant rearing rigorous rise rising rising ground rocketing up rough rugged saltation saltatory scandent scansorial set with thorns severe shooting up skyrocketing skyward slantingly slantways slantwise slaunchways slopeways slopingly soaring spiny spiraling spout spring springing spurt steep steepness strained strenuous surge takeoff taking off thorny ticklish tipsily toilsome tough tricky troublesome up up attic up north up steps upalong uparching upclimb upcoming updraft upgang upgo upgoing upgrade upgrowth uphillward upleap uplift uplong upping uprisal uprise uprising uprush upshoot upslope upsloping upstairs upstream upstreamward upsurge upsurgence upsweep upswing uptown upward upwards upwith vault verticalness wearisome wicked zooming