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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.

As plants break down underwater, they form methane, which then bubbles to the surface.

From Los Angeles Times • Apr. 15, 2026

Cuba’s underwater bus turns into a lifeline amid fuel crisis.

From MarketWatch • Apr. 14, 2026

The Russian embassy has previously said it was "not interested in British underwater communications."

From BBC • Apr. 9, 2026

Geologists often attribute them to underwater landslides that push sediment into ridges and grooves.

From Science Daily • Apr. 3, 2026

Among the most innovative of these new tools is a small underwater robot also officially named Deep Trekker but given the name “Neptune” in honor of the dog that accompanied the Franklin expedition.

From "Shipwrecked!" by Martin W. Sandler