Crossword Genius

Order to leave: do so imploringly (6)

Ross

I believe the answer is:

begone

'order to leave' is the definition.
(word used to command that someone goes away)

I don't understand the remainder of the clue.

(Other definitions for begone that I've seen before include "Archaic command to go away, banish" , "Get away" , "Archaic word of dismissal" , "get lost" , "Take a hike" .)

I've seen this clue in The Times.
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