Adopt, embrace (7)
I believe the answer is:
espouse
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">adopt</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">embrace</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ ></span>
(Other definitions for espouse that I've seen before include "Take in marriage" , "Marry -- take on as a cause" , "Follow and promote a cause" , "Adopt - give support to" , "Embrace" .)