saltwater

[sawlt-waw-ter, -wot-er] / ˈsɔltˈwɔ tər, -ˈwɒt ər /

ADJECTIVE

marine

Synonyms

STRONGEST

aquatic coastal deep-sea maritime naval seagoing

STRONG

littoral nautical oceanic sea seafaring seashore seaside shore

WEAK

Neptunian abyssal hydrographic natatorial navigational ocean-going oceanographic pelagic

Antonyms

WEAK

freshwater

ADJECTIVE

marine/maritime

Synonyms

WEAK

Neptunian abyssal aquatic coastal deep-sea hydrographic littoral natatorial nautical naval navigational oceangoing oceanic oceanographic of the sea pelagic sea seafaring seagoing seashore seaside shore

ADJECTIVE

thalassic

Synonyms

WEAK

Neptunian abyssal aquatic coastal deep-sea hydrographic littoral maritime natatorial nautical naval navigational oceangoing oceanic oceanographic of the sea pelagic sea seafaring seagoing seashore seaside shore

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.

A new saltwater lido on the seafront has also been proposed.

From BBC • Mar. 19, 2026

Out back, there’s a saltwater pool, spa, basketball court, bocce court, putting green, and driving range.

From MarketWatch • Feb. 27, 2026

Not only did it continue operating effectively, it also removed sodium ions from the saltwater solution.

From Science Daily • Feb. 19, 2026

They’ve had to enlist friends to take care of their saltwater fish tank back home.

From The Wall Street Journal • Jan. 6, 2026

We made our children gargle with warm saltwater and wrap mufflers around their necks.

From "Interpreter of Maladies" by Jhumpa Lahiri