Playwright opposite plugging leading performer -- daughter! (8)

I believe the answer is:

stoppard

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'playwright' is the definition.
(I know that Stoppard is a playwright)

'opposite plugging leading performer daughter' is the wordplay.
'opposite' becomes 'opp' (I can't justify this - if you can you should give a lot more credence to this answer).
'plugging' is an insertion indicator (inserted letters plug up a gap in the word).
'leading performer' becomes 'star' (I've seen this before).
'daughter' becomes 'd' (genealogical abbreviation).
'opp' put inside 'star' is 'stoppar'.
'stoppar'+'d'='STOPPARD'

Can you help me to learn more?

(Other definitions for stoppard that I've seen before include "Member of 7 [ORDER OF MERIT]" , "Tom --, Br. playwright" , "Sir Tom -, Czech-born English dramatist" , "Tom -, Czech-born British playwright" .)

I've seen this clue in The Telegraph.

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