Definition-- to wear away, destroy or be destroyed gradually.
Discussion--Erode generally refers to the process of erosion and the wearing down of mountains and other natural formations. Worse is an erosion of your confidence or self esteem.
Etymology--erode is derived from the Latin erodere, meaning to gnaw off or eat away. The prefix e- means away and the root rodere means gnaw. This root is also the root of the terms rodent and corrode.
You can see the Latin root for erode in the languages below.