acclivity

an upward slope <the steep acclivity was especially daunting for the novice hikers> Synonyms ascent, hill, rise, upgrade, uphill, upriseRelated Words cant, diagonal, glacis, grade, gradient, inclination, incline, lean, pitch, rake, tilt; climb, hump, mound, ridge, swellNear Antonyms basin, depression, hollowAntonyms declension, decline, declivity, descent, dip, downgrade, downhill, drop-off, fall, hang, hanging