Sidehill is a term that is often used to refer to a slope or incline that is inclined to one side or the other. This term can be used in a variety of contexts, from discussing terrain features in outdoor recreation to describing the construction of a building or roadway. There are a number of synonyms that can be used to describe this type of terrain, including slant, incline, slope, hill, gradient, pitch, grade, and tilt. Each of these terms carries a slightly different connotation, but all are useful for describing the way that a surface is angled, whether in the natural environment or in a man-made structure.