More dreadful (5)
(Other definitions for worse that I've seen before include "more unpleasant" , "Inferior to another" , "Opposite of better" , "More severe; less well" , "More serious" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">more dreadful</span>' is the definition.<br/ ><span class="explanation-format__explanation">('dire' can be a synonym of 'dreadful')</span><br/ ><br/ >This is the entire clue.<br/ ></span>