steepness

/ˈstiːpnəs/
noun
  1. The quality or degree of being steep; a sharp slope or incline.
    • Engineers measured the steepness of the hill before building the road.
    • The steepness of the trail made the hike very tiring.
    • Because of the steepness of the roof, the workers had to use safety ropes.
Antonyms
What does "steepness" mean? | whatsthatwordmean | whatsthatwordmean