Wither away is a term used to describe the process of something gradually deteriorating or weakening over time. The crossword solutions for this term are ATROPHY (7 letters), FADE (4 letters), and EMACIATE (8 letters). ATROPHY is the process of wasting away due to lack of use or nourishment, while FADE is the gradual decrease in brightness or intensity. EMACIATE is the process of becoming extremely thin or weak due to illness or lack of nourishment. All three of these words can be used to describe the process of withering away.