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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.

Sewage and agricultural pollution in rivers is having an "alarming" knock-on impact on marine life in underwater forests along the British coastline, according to new research.

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

A healthy otter population helps keep those underwater forests intact.

From Los Angeles Times • Apr. 29, 2026

Together, the HYDROs dove toward the bottom of the ocean, and as they faded into the deep, the underwater door closed behind them.

From "The Wild Robot Protects" by Peter Brown