Crossword Genius

Effervescent fellow, outwardly skilful (7)

Ross

I believe the answer is:

abubble

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'effervescent' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'fellow outwardly skilful' is the wordplay.
'fellow' becomes 'bub' (I've seen this in another clue).
'outwardly' means one lot of letters goes inside another (some letters go outside others).
'skilful' becomes 'able' (I've seen this before).
'bub' placed inside 'able' is 'ABUBBLE'.

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I've seen this clue in the Sydney Morning Herald.
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