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Definitions

underwater

[uhn-der-waw-ter, -wot-er] / ˈʌn dərˈwɔ tər, -ˈwɒt ər /
ADJECTIVE
under the water's surface
Synonyms


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.

Study suggests two underwater faults could each generate 7.1 quakes, swamping areas near shore with 30-foot waves.

From Los Angeles Times • May 4, 2026

Seagrasses are flowering plants that live in shallow, sheltered areas of the coast, forming dense underwater meadows.

From BBC • May 2, 2026

Still, the instant discount is something of a black eye, since it means investors who lined up to buy the fund at launch are already underwater.

From Barron's • May 1, 2026

Led by Lamont scientist Suzanne Carbotte, with co-author Anne Bécel, the team sent sound waves into the seafloor and captured their echoes using a 15-kilometer-long array of underwater sensors.

From Science Daily • Apr. 29, 2026

Convinced that the best way to deliver his mines during wartime would be by submarine, he constructed a hand-powered, wooden, underwater vessel large enough to accommodate one operator.

From "Shipwrecked!" by Martin W. Sandler