Oblige (6)
I believe the answer is:
compel
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">oblige</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that oblige can be written as compel)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for compel that I've seen before include "Bring about by force" , "Coerce, force to obey" , "Use force or influence to make something happen" , "Force, oblige to do something" , "'Force, oblige (6)'" .)