Unify (5)
I believe the answer is:
unite
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unify</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for unite that I've seen before include "Marry" , "Become a single whole" , "Put together" , "Link" , "Combine - join" .)