On again (5)
I believe the answer is:
relit
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">on again</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for relit that I've seen before include "Kindled anew" , "Tiler (anag.)" , "in flames again" , "got going again" , "Illuminated again" .)