Unacceptable in the south (3)

I believe the answer is:

out

'unacceptable' is the definition.
(out can mean incorrect or inappropriate)

'in the south' is the wordplay.
'in' indicates a hidden word.
'OUT' is hidden within 'south'.

(Other definitions for out that I've seen before include "SECOND PART OF 16" , "In error" , "Disnmissed (cricket)" , "No longer in prison" , "Possibly caught" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.