Plead with a person to buzz off? (6)

I believe the answer is:

begone

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'person to buzz off?' is the definition.
I can't judge whether this definition defines the answer.

'plead with a' is the wordplay.
'plead with' becomes 'beg' (I've seen this in another clue).
'a' becomes 'one'.
'beg'+'one'='BEGONE'

Can you help me to learn more?

(Other definitions for begone that I've seen before include "Take a hike" , "shove off" , "Archaic command to buzz off" , "Get away" , "make himself scarce" .)

I've seen this clue in the Evening Standard.

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