What is another word for steepness?
Pronunciation: [stˈiːpnəs] (IPA) 
Steepness suggests an inclination or gradient of a surface that goes beyond being gentle and flat. The word implies a severity that can be exemplified in numerous ways. Some synonyms that come to mind when describing steepness are sharpness, abruptness, abruptitude, inclination, and pitch. When referring to the steepness of a slope, terms such as grade, slant, and gradient may be used. If one wants to emphasize the steep nature of a particular surface, some other excellent synonyms may include sheer, precipitous, vertiginous, and towering. In summary, there are numerous synonyms for the term steepness, all of which have the common denominator of expressing an acute angle between two planes.
