acclivity

/əˈklɪvɪti/
noun
  1. An upward slope or incline, especially a steep one.
    • The cyclists struggled to climb the steep acclivity on their morning ride.
    • From the top of the acclivity, we could see the entire valley below.
    • The trail began with a gentle acclivity that soon became much steeper.
Antonyms
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