Give an exposition of French writer (8)

I believe the answer is:

describe

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'give an exposition of french writer' is the definition.
I can't tell whether this definition defines the answer.

'of french writer' is the wordplay.
'of french' becomes 'de' ('of' in French).
'writer' becomes 'scribe' (scribe is a kind of writer).
'de'+'scribe'='DESCRIBE'

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(Other definitions for describe that I've seen before include "style" , "Give detailed account of" , "Tell what something is like" , "Represent in words" , "Draw (a geometrical figure)" .)

I've seen this clue in The Irish Independent.

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