Turns off (11)
(Another definition for disenchants that I've seen is " is disappointing".)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">turns off</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>
(Another definition for alienates that I've seen is " Transfers ownership of".)