An undesirable overabundance is a situation in which there is an excessive amount of something, usually to the point of being detrimental. This concept can be expressed in several ways, such as SURFEIT (7 letters), GLUT (4 letters), PLETHORA (8 letters), and PILES (5 letters). A SURFEIT is an excessive amount of something, while a GLUT is an overwhelming abundance. A PLETHORA is an extremely large number of something, and PILES are a large quantity of something. All of these terms refer to an undesirable overabundance.