Ancient Dead Sea region (4)
I believe the answer is:
edom
'ancient dead sea region' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for edom that I've seen before include "Biblical kingdom" , "Biblical people" , "In the Bible, the land of the people of Esau" , "Ancient land bordering Israel" , "Backward manner of existence" .)