More tardy (5)
I believe the answer is:
later
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">more tardy</span>' is the definition.<br/ ><span class="explanation-format__explanation">('late' can be a synonym of 'tardy')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for later that I've seen before include "goodbye" , "succeeding" , "Alter (anag.)" , "At a time in the future" , "Afterward, subsequent" .)