Exist; not recorded (4)
I believe the answer is:
live
I believe this is a double definition.
'exist' is the first definition.
(synonyms)
'not recorded' is the second definition.
('live' is the opposite to 'recorded')
(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" .)