Reprove, with "out" (4)
I believe the answer is:
lash
'reprove with out' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lash that I've seen before include "Whip or scourge" , "Stroke of the whip" , "Whip; securely fasten" , "Flog" , "Whip with a sharp blow" .)