1) Fenny 2) Marshy 3) Miry 4) Mucky 5) Muddy 6) Quaggy 7) Sloughy 8) Swampy 9) Wet 1) Like a fen 2) Like a swamp 3) Marshlike 4) Marshy 5) Miry 6) Mucky 7) Muddy 8) Peaty 9) Quaggy 10) Sloughy 11) Soft and waterlogged 12) Soft and watery 13) Soggy 14) Swamplike 15) Swampy 16) Wet and spongy 
• (a.) Consisting of, or containing, a bog or bogs; of the nature of a bog; swampy; as, boggy land.
Bog'gy adjective Consisting of, or containing, a bog or bogs; of the nature of a bog; swampy; as, boggy land. 
[adj] - (of soil) soft and watery
marshy 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`
containing or full of bogs: It was difficult walking through the boggy terrain. · wet and spongy: The ground is boggy under foot.