To-do (3-2)
'to-do' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for hoo-ha that I've seen before include "Fuss, commotion" , "Fuss (informal)" , "Noisy fuss" , "great deal of fuss" , "Commotion (informal)" .)
'to-do' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for hullabaloo that I've seen before include "Brouhaha" , "Outcry" , "Row" , "racket" , "Uproar" .)
'to-do' is the definition.
(I know that fuss is a type of to-do)
This is the entire clue.
(Other definitions for fuss that I've seen before include "Protest -- excitement" , "Worry without reason" , "Display of unnecessary interest" , "Commotion - worry" , "Bother, ado" .)
(Another definition for carry-on that I've seen is " Fuss".)