Comfortable about stolen report (7)
I believe the answer is:
gunshot
'report' is the definition.
(thesaurus)
'comfortable about stolen' is the wordplay.
'comfortable' becomes 'snug' ('snug' can be similar in meaning to 'comfortable').
'about' says the letters should be written backwards.
'stolen' becomes 'hot' (I've seen this before).
'snug' backwards is 'guns'.
'guns'+'hot'='GUNSHOT'
(Other definitions for gunshot that I've seen before include "Crack" , "Source of report" , "Noughts (anag)" , "One fired" , "Fire" .)