Garishness (5)
I believe the answer is:
glitz
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">garishness</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that garishness can be written as glitz)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for glitz that I've seen before include "Extravagant superficial display (colloq.)" , "Garishness" , "Showiness" .)