To waste away; to be dissipated; to be decomposed or broken up.
Defn: To turn to dust; to cause to crumble; to cause to waste away.
Defn: To waste away completely by suffering or torment.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "waste away" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.