The term 'washing away' can be described by two crossword solutions: EROSION and eroding. EROSION is the process of wearing away of the surface of the earth by water, wind, or other natural agents. It is a gradual process that can cause significant changes to the land over time. Eroding is the act of eroding, which is the process of gradually wearing away the surface of the earth. Both EROSION and eroding are natural processes that can have a major impact on the environment.