9
bogs(noun, wastes, deserts, mires, swamps)
7
swamps(noun, wastes, messes, deserts, muddles)
6
fens(noun, swamp, wastes, deserts, swamps)
6
quagmires(noun, wastes, messes, deserts, swamps)
5
mires(noun, messes, muddles, swamps, bogs)
5
swamplands
4
glades
3
marsh
3
marshlands
3
sloughs
3
wetlands
2
ablutions
2
bog
1
bottoms
1
everglade
1
fen
1
moors
1
morass
1
morasses(noun, messes, muddles, mires, swamps)
1
swamp
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APASmart Define. (2015). marshes thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/marshes/thesaurus/synonyms
ChicagoSmart Define. 2015. "marshes thesaurus" https://smartdefine.org/marshes/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, marshes thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/marshes/thesaurus/synonyms>.
MLASmart Define. "marshes thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/marshes/thesaurus/synonyms>