Has on (5)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">has on</span>' is the definition.<br/ ><span class="explanation-format__explanation">('wear' can be a synonym of 'have on')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for wears that I've seen before include "Dresses in" , "Dons (clothes)" , "Sports; erodes" , "Swear (anag.)" .)