Shout, rave (4)
I believe the answer is:
rant
This clue is a double definition.
'shout' is the first definition.
(I've seen this in other clues)
'rave' is the second definition.
(I know that rave can be written as rant)
(Other definitions for rant that I've seen before include "Harangue, rave" , "Shout wildly at length" , "Speak wildly and incoherently" , "bombast" , "Rail" .)