Why reprimand? (4,3)
I believe the answer is:
what for
I believe this is a double definition.
'why' is the first definition.
(thesaurus)
'reprimand?' is the second definition.
(what for is a kind of reprimand)
(Other definitions for what for that I've seen before include "it's a question of purpose" , "reprimand?" , "Punishment that may be given" , "Beating" .)