boggy
adjective /ˈbɒɡi/
  /ˈbɑːɡi/
(comparative boggier, superlative boggiest)
- (of land) soft and wet, like a bog- boggy ground
- The path through the moorland is boggy but still in use.
- They made their way through the boggy ground to the farmhouse.
 Oxford Collocations DictionaryBoggy is used with these nouns:- terrain