Force, compel (6)
I believe the answer is:
coerce
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">force</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">compel</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(coercing is a kind of compelling)</span><br/ ><br/ ></span>
(Other definitions for coerce that I've seen before include "Persuade using threats" , "Railroad" , "Force into obedience" , "Forcibly compel" , "Make or compel" .)