Find Synonyms

seawater Synonyms

Another word for seawater

Choosing another word for seawater that fits your sentence is easier when synonyms and similar words are paired with an exact noun definition and ranked by match strength.
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• noun (Context 1)

Water in or taken from a sea or ocean, characterized by a high concentration of dissolved salts, predominantly sodium chloride.

Usage Example

"The desalination plant converts millions of gallons of saltwater into fresh drinking water every day."

Strongest
saltwater
Strong
brine

Opposites of seawater

The opposite of seawater shifts depending on context. Common opposites include:

freshwater
See all opposites of seawater

• Nearby Words

seatwork
seawall
seaward
seawater
seaway
seaweed
seaworthiness

Cite this Entry

Wordmom. (2026). Synonyms for Seawater. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/seawater
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