1. 
[syn: boggy, marshy, miry, mucky, muddy, quaggy, sloppy, sloughy, soggy, squashy, swampy, waterlogged]
The Collaborative International Dictionary of English v.0.48:
Swampy \Swamp"y\, a.
   Consisting of swamp; like a swamp; low, wet, and spongy; as,
   swampy land.
   [1913 Webster]
WordNet (r) 3.0 (2006):
swampy
    adj 1: (of soil) soft and watery; "the ground was boggy under
           foot"; "a marshy coastline"; "miry roads"; "wet mucky
           lowland"; "muddy barnyard"; "quaggy terrain"; "the
           sloughy edge of the pond"; "swampy bayous" [syn: boggy,
           marshy, miry, mucky, muddy, quaggy, sloppy,
           sloughy, soggy, squashy, swampy, waterlogged]
Moby Thesaurus II by Grady Ward, 1.0:
33 Moby Thesaurus words for "swampy":
   boggish, boggy, damp, dampish, dank, dewy, fenny, humid, marish,
   marshy, mirish, miry, moist, moorish, moory, muddy, muggy, paludal,
   paludous, poachy, quaggy, quagmiry, rainy, roric, roriferous,
   spouty, sticky, swampish, tacky, uliginous, undried, wet,
   wettish