Discourage, dissuade (5)
I believe the answer is:
deter
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">discourage</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that discourage can be written as deter)</span><br/ ><br/ >'<span class="explanation-format__original">dissuade</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that dissuade can be written as deter)</span><br/ ><br/ ></span>
(Other definitions for deter that I've seen before include "Hinder, prevent" , "Put off (from an action)" , "Inhibit" , "Cause not to do something" , "Daunt" .)