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  • marsh
    marsh
    noun
    a tract of low wet land, often treeless and periodically inundated, generally characterized by a growth of grasses, sedges, cattails, and rushes.
  • Marsh
    Marsh
    noun
    Dame (Edith) Ngaio 1899–1982, New Zealand writer of detective novels.
Synonyms

marsh

1 American  
[mahrsh] / mɑrʃ /

noun

marshes plural
  1. a tract of low wet land, often treeless and periodically inundated, generally characterized by a growth of grasses, sedges, cattails, and rushes.

    Synonyms:
    wetland, marshland, fen, bog, swamp

Marsh 2 American  
[mahrsh] / mɑrʃ /

noun

  1. Dame (Edith) Ngaio 1899–1982, New Zealand writer of detective novels.

  2. Reginald, 1898–1954, U.S. painter and illustrator.


Marsh 1 British  
/ mɑːʃ /

noun

  1. Dame ( Edith ) Ngaio (ˈnaɪəʊ). 1899–1981, New Zealand crime writer, living in Britain (from 1928). Her many detective novels include Final Curtain (1947) and Last Ditch (1977)

  2. Rodney ( William ). born 1947, Australian cricketer: a wicketkeeper, he took 355 dismissals in 96 test matches (1970–84)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

marsh 2 British  
/ mɑːʃ /

noun

  1. low poorly drained land that is sometimes flooded and often lies at the edge of lakes, streams, etc Compare swamp

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

marsh Scientific  
/ märsh /
  1. An area of low-lying wetland in which the level of water is generally shallow and often fluctuating. The water may be either standing or slow-moving. The water in a marsh is also more or less neutral or alkaline, in contrast to the water in a bog, which is acidic. The environment of a marsh is in general well-oxygenated and nutrient-rich and allows a great variety of organisms to flourish. In contrast to a swamp, in which there is an abundance of woody plants, the plants in a marsh are mostly herbaceous. Reeds and rushes dominate the vegetation of marshes.

  2. See also salt marsh


Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of marsh

before 900; Middle English mershe, Old English mer ( i ) sc (cognate with German Marsch ). See mere 2, -ish 1; cf. marais, marish, morass

Explanation

A marsh is an area in transition from land to water. It is a very bad idea to go walking in a marsh in your best shoes; try some fishing boots, or perhaps a boat. The word marsh comes from the old Dutch word mere, for sea, and it means land that is sea-ish… not sea, but sea-ish, like most of Holland. Marshes can be found often where a river empties into the sea, or along the side of a low, flooded river. Another word for marsh is swamp. If you’re in trouble or just want to be alone, a marsh is a great place to hide: no one will follow you. Just don’t forget your galoshes.

Keep Reading on Vocabulary.com

Vocabulary lists containing marsh

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

“Tiny dog escapes marsh, survives aerial assault by an organized gang of seagulls, and is rescued by the Menlo Park Fire Department,” East Palo Alto police wrote.

From Los Angeles Times Jul. 19, 2026

Environmentalists say the wall will accelerate erosion elsewhere while starving the neighboring salt marsh of sediment, hurting wildlife.

From The Wall Street Journal Jul. 8, 2026

"These are specialist species which really need reed beds, long grassy habitats and areas like peat bog and marsh," he added.

From BBC May 19, 2026

"There was a great pressure to restore the area. I think people worried it would stay a muddy mess but soon vegetation started to appear and it became established as a salt marsh," Hester added.

From BBC May 4, 2026

A flash of something caught my eye and I looked right, to an area within the thick rushes of the marsh where a tidal pool of water had gathered.

From "Root Magic" by Eden Royce

Marsh had written of Soviet officers knocking on citizens’ doors in pursuit of information for her young-adult novel about authoritarianism in Stalinist Ukraine, a finalist for the National Book Award.

From The Wall Street Journal Jul. 24, 2026

Although such premiums had narrowed considerably in recent days, if more incidents happen, they could increase again, said Marcus Baker, head of marine and cargo for insurance broker Marsh.

From MarketWatch Jun. 26, 2026

Marsh & McLennan, which advises others on risk, ranks third in resilience—a sign that it practices what it preaches.

From The Wall Street Journal Jun. 8, 2026

Marsh said it had left the situation "back to square one".

From BBC Jun. 4, 2026

“I am Henrietta Von Marsh of the Ladies’ Manumission Society, and these children are wards of the Colored Orphan Asylum.

From "Dactyl Hill Squad" by Daniel José Older

This giant salamander lived in the broad freshwater lakes and marshes that covered parts of Kyushu several million years ago.

From Science Daily Jul. 24, 2026

Saltwater is beginning to contaminate farmland reclaimed over the past five centuries from the delta marshes.

From Barron's Jun. 27, 2026

A new exhibition has now opened in Porlock museum outlining the 30-year process to create the marshes.

From BBC May 4, 2026

He owns Little Pecan, a private island in the Louisiana marshes and a hunting paradise.

From The Wall Street Journal Nov. 27, 2025

Why could I not go in the early mornings to the marshes, cut papyrus and sell it to the sailmakers, then be Rekh’s apprentice the rest of the day?

From "The Golden Goblet" by Eloise Jarvis McGraw

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