Recklessly wasteful (8)
I believe the answer is:
prodigal
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">recklessly wasteful</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for prodigal that I've seen before include "Wasteful - gold pair (anag)" , "Improvident" , "Wastefully extravagant" , "Extravagant - lavish" , "Spendthrift" .)