Swampland (6)
I believe the answer is:
morass
'swampland' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for morass that I've seen before include "Area of boggy ground" , "Bog; confused situation" , "Bog or marsh" , "Confusion" , "Swampy, low-lying land" .)