A good deal (4)
I believe the answer is:
many
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">a good deal</span>' is the definition.<br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for many that I've seen before include "Multitudinous" , "Several" , "Lots" , "Numerous" , "A great number" .)