Bewilder Truss about folios (6)
I believe the answer is:
baffle
'bewilder' is the definition.
(synonyms)
'truss about folios' is the wordplay.
'truss' becomes 'bale' (both can mean a tied up amount of something).
'about' is an insertion indicator.
'folios' becomes 'ff'.
'bale' placed around 'ff' is 'BAFFLE'.
(Other definitions for baffle that I've seen before include "Puzzle - foil" , "Sound muffler, bewilder" , "Bewilder, puzzle" , "Totally bewilder" , "Perplex and bewilder" .)