Exist; not recorded (4)
I believe the answer is:
live
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">exist</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">not recorded</span>' is the second definition.<br/ ><span class="explanation-format__explanation">('live' is the opposite to 'recorded')</span><br/ ><br/ ></span>
(Other definitions for live that I've seen before include "Be - positive" , "Of TV programme, seen while taking place" , "Carrying current - not pre-recorded" , "Dwell" , "Alert and enthusiastic person" .)