blustered (6)
I believe the answer is:
ranted
'blustered' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ranted that I've seen before include "Spoke wildly and foolishly" , "Spoke wildly and incoherently" , "Talked wildly and angrily" , "Raved, spouted" , "Talked wildly and loudly" .)