As it happens, society newbie's over worry (7)
I believe the answer is:
bedevil
'worry' is the definition.
(thesaurus)
'as it happens society newbie's over' is the wordplay.
'as it happens' becomes 'live' (as in live television).
'society newbie' becomes 'deb' (I've seen this in another clue).
'over' says the letters should be written backwards.
'live'+'deb'='livedeb'
'livedeb' in reverse letter order is 'BEDEVIL'.
(Other definitions for bedevil that I've seen before include "trouble" , "Cause problems for" , "Torture" , "Cause continual difficulties" , "Vile bed (anag.)" .)