Scare off
I believe the answer is:
deter
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">scare 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>
(Other definitions for deter that I've seen before include "Hinder, prevent" , "Frighten off; prevent" , "Discourage through fear of consequences" , "Dishearten" , "Discourage (someone from an action)" .)