freshwater

1 of 2

adjective

Synonyms of freshwaternext
1
a
: consisting of or containing fresh water
freshwater marshes
freshwater aquariums
compare saltwater
b
: living in or taken from fresh water
freshwater mussels/fish
freshwater pearls
c
: relating to or taking place in fresh water
freshwater diving/sailing
2
US, dated : inland and usually provincial
a freshwater college

fresh water

2 of 2

noun

variants or less commonly freshwater
1
: water that is not salty
… the lake holds the largest volume of fresh water in the world, 5,000 cubic miles.Philip Taubman
also : water that is considered suitable for consumption
He saw many islands, but they were flat or rocky or they lacked fresh water or their anchorage was too shallow. John Taylor
2
: a body of fresh water
The hydrosphere includes oceans, fresh water, glaciers, and ice caps.Leigh Broadhurst
compare salt water

Examples of freshwater in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
Alligators, by contrast, are freshwater dwellers that populate lakes, ponds and marshes across the state. Ivan Taylor, CBS News, 27 Aug. 2026 In light of these issues, the commission recommended against fracking in the southern Tampico-Misantla basin, but redirected fracking to basins that contain saltwater rather than freshwater aquifers. Ian Dexter Palmer, Forbes.com, 11 Aug. 2026
Noun
The bacteria, Vibrio vulnificus, is prevalent in coastal waters, including brackish water where fresh water mixes with salty water. Michael Cappetta, Travel + Leisure, 26 Aug. 2026 This fresh water aggressively dissolves the salt walls, widening the cavern and dangerously thinning the structural pillars between adjacent domes. Siddharth Misra, Fortune, 25 Aug. 2026 See All Example Sentences for freshwater

Word History

First Known Use

Adjective

15th century, in the meaning defined at sense 1b

Noun

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of freshwater was in the 14th century

Browse Nearby Words

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Cite this Entry

“Freshwater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/freshwater. Accessed 1 Sep. 2026.

Kids Definition

freshwater

adjective
fresh·​wa·​ter
ˌfresh-ˌwȯt-ər
-ˌwät-
: of, relating to, or living in fresh water
a freshwater fish

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