Rebukes (6)
I believe the answer is:
scolds
'rebukes' is the definition.
('scold' can be a synonym of 'rebuke')
This is the entire clue.
(Other definitions for scolds that I've seen before include "Reprimands, tells off harshly" , "Nags - naggers" , "Chides, reprimands" , "Berates, reproves" , "Tells off, rebukes" .)