Befuddles (6)
I believe the answer is:
addles
'befuddles' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for addles that I've seen before include "Confuses or becomes rotten" , "Confuses like bad egg" , "Confuses or goes bad" , "Confuses in saddle" , "Muddles, confuses" .)