Crossword Genius

Careless teen surprisingly a favourite with audience (5-7)

Ross

I believe the answer is:

scene-stealer

'a favourite with audience' is the definition.

'careless teen surprisingly' is the wordplay.
'surprisingly' indicates anagramming the letters.
'careless'+'teen'='carelessteen'
'carelessteen' with letters rearranged gives 'SCENE-STEALER'.

I've seen this clue in The Guardian.
Want a hint initially instead of a full solution? Install my app