Unwillingly (11)
(Other definitions for reluctantly that I've seen before include "Unwillingly, hesitantly" , "Without enthusiasm" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unwillingly</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for under protest that I've seen before include "Complaining" , "Unwillingly" , "Reluctantly" .)