Less well (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">less well</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for worse that I've seen before include "More awful or unwell" , "Bad to a greater degree" , "Opposite of better" , "Of poorer quality" , "Less satisfactory" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">less well</span>' is the definition.<br/ ><span class="explanation-format__explanation">('ill' can be the opposite of 'well' so perhaps 'iller' is reasonable for 'less well')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for iller that I've seen before include "Even more 9" , "In worse health" , "Less well" .)