Baffle, confuse (7)
I believe the answer is:
perplex
I believe this is a double definition.
'baffle' is the first definition.
(synonyms)
'confuse' is the second definition.
(I know that perplex is a more specific form of the action confuse)
(Other definitions for perplex that I've seen before include "Nonplus" , "Baffle, puzzle" , "Bamboozle" , "Mystify" , "Baffle, flummox" .)