Thrift (7)
I believe the answer is:
economy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">thrift</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 economy that I've seen before include "Judicious expenditure of money" , "Financial system" , "Frugality" , "Careful use of resources" , "Careful expenditure" .)