Lacking freshness (5)
I believe the answer is:
stale
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">lacking freshness</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(Other definitions for stale that I've seen before include "Musty - out of date" , "Old; musty" , "Boring" , "Least (anag.)" , "No longer take" .)