Answer: reusing

AnswerCrossword Clue
REUSINGExtending the life of
reusingthe purpose for which something is used
reusingto put into service
reusingto treat
reusingthe power of using something
reusingto consume
reusingto take unfair advantage of
reusingusing or being used
reusingto be accustomed
reusingREUSE, to use again