Atrophy

[Sarah]

The process by which things reduce or decrease in value until they cease to exist.

[Little_Girl]

atrophy is when youre too lazy to get up and [work out] or do anything and your whole body seems to [morph] from being totally ripped to looking like [the marshmallow] man.

[Julian]

(of body tissue or an organ) waste away, especially as a result of the degeneration of cells, or become vestigial during evolution.

[LouissaRini]

a decrease in size of an organ caused by disease or disuse