A reporter’s pushiness causing offence (7)

I believe the answer is:

affront

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'offence' is the definition.
(as in affronting someone)

I cannot understand how the rest of the clue works.

(Other definitions for affront that I've seen before include "A slight" , "Cause of outrage or offence" , "Insult to one's face" , "Offend the modesty or values of (someone)" , "Open insult" .)

I've seen this clue in The Times.

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