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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

They are home to rare and threatened species, such as the bluebell, the herb Paris, the barbastelle bat and the red-listed and locally declining marsh tit.

From BBC Jun. 24, 2026

Areas of salt marsh and marsh grazing like Farlington are incredibly important and rare habitat in the south of England.

From BBC Jun. 4, 2026

They had a few miles of frozen marsh to cross, and then they were within sight of the whaling station.

From "Shipwreck at the Bottom of the World" by Jennifer Armstrong

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

Marsh said she later learned that the government had also requested her phone records.

From The Wall Street Journal Jul. 24, 2026

Marsh described Scatchard as "devious, cunning and untruthful".

From BBC Jul. 10, 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

She stared right back at him, for once grateful that Von Marsh insisted on calling her the wrong name.

From "Dactyl Hill Squad" by Daniel José Older

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

From Barron's Jun. 27, 2026

Dick Dale is a New York landscape painter who boards at the Owen family farm in the salt marshes of northeastern Massachusetts.

From The Wall Street Journal Mar. 26, 2026

Along the way, it passes through some of the country's most beautiful and varied landscapes, from salt marshes and sandy beaches to cliffs, dunes and historic coastal towns.

From BBC Mar. 18, 2026

Anacondas currently live in wetlands, marshes and major rivers including the Amazon.

From Science Daily Dec. 3, 2025

“No,” said he, “not particularly. I am going out for a ride in the saddle. I mean to explore those marshes for amusement. Out-of-the-way villages there, they tell me. Curious little public-houses—and smithies—and that. Waiter!”

From "Great Expectations" by Charles Dickens

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