On the far side (6)
I believe the answer is:
beyond
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">on the far side</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for beyond that I've seen before include "Further than or outside the scope of" , "Outside the range of" , "Farther than or outside" , "(The) hereafter" , "On the farther side - in addition" .)