acclivity

An acclivity might be something to dread if you ride a bike a lot. An acclivity is an uphill slope, so you’ll have to pedal a little harder to get to the top.

The word acclivity traces back to the Latin word acclivis, meaning “ascending,” which is a combination of ad-, meaning “toward,” and clivus, meaning “slope.” If you encounter an acclivity, it’s going to be all uphill until you get to the top. The opposite of an acclivity is a declivity, which has a similar Latin origin. In the case of declivity, it’s the de- prefix, meaning “down,” that moves things in the opposite direction and gives it the meaning of “downhill slope.”

Definitions of acclivity
  1. noun
    an upward slope or grade (as in a road)
    synonyms: ascent, climb, raise, rise, upgrade
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    Antonyms:
    declension, declination, decline, declivity, descent, downslope, fall
    a downward slope or bend
    types:
    uphill
    the upward slope of a hill
    type of:
    incline, side, slope
    an elevated geological formation
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