Hot mess (5)
I believe the answer is:
snafu
'hot mess' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for snafu that I've seen before include "Slangy acronym meaning in total confusion" , "Chaos (US slang)" , "Chaotic situation" , "Customary confusion" , "Chaotic state, mess" .)