Crossword Genius

I am papa’s naughty child (3)

Ross

I believe the answer is:

imp

'naughty child' is the definition.
(informal term for a misbehaving child)

'i am papa's' is the wordplay.
'i am' becomes 'im' ().
'papa' becomes 'P' (phonetic alphabet: alpha, bravo, charlie etc.).
'im'+'p'='IMP'

(Other definitions for imp that I've seen before include "Small devil or sprite" , "Emperor" , "Mischievous child" , "one likely to cause trouble" , "Small demon" .)

I've seen this clue in The Times.
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