Little child is involved in a deception — gets punishment (10)

'punishment' is the definition.
(thesaurus)

'little child is involved in a deception' is the wordplay.
'little child' becomes 'cha' (I can't justify this - if you can you should believe this answer much more).
'involved in' indicates putting letters inside.
'a deception' becomes 'sting' (sting can mean a cheat or trick).
'is' inserted within 'sting' is 'stising'.
'cha'+'stising'='CHASTISING'

'gets' acts as a link.