Stopped over in Fez or Freetown (5)
I believe the answer is:
froze
'stopped' is the definition.
'over in fez or freetown' is the wordplay.
'over' says the letters should be written in reverse.
'in' indicates a hidden word.
'ezorf' can be found hidden inside 'fez or freetown'.
'ezorf' written backwards gives 'FROZE'.
(Other definitions for froze that I've seen before include "Became motionless" , "Suddenly stood motionless" , "stopped moving altogether" , "Became immobilised" , "Became iced over" .)