Avoiding waste (6)
I believe the answer is:
frugal
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">avoiding waste</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for frugal that I've seen before include "Taking care" , "Thrifty or parsimonious" , "not extravagant" , "Economical, avoiding waste" , "Sparing, meagre" .)