SWAMPY
boggy, marshy, miry, mucky, muddy, quaggy, sloppy, sloughy, soggy, squashy, swampy, waterlogged
(adjective) (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”
Source: WordNet® 3.1
Etymology
Adjective
swampy (comparative swampier, superlative swampiest)
Soggy and marshy; wet like a swamp.
Flowing smoothly with no harsh tones but possibly including muddy tones.
Source: Wiktionary
Swamp"y, a.
Definition: Consisting of swamp; like a swamp; low, wet, and spongy; as,
swampy land.
Source: Webster’s Unabridged Dictionary 1913 Edition