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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 crossing also kicked off a broader mission using underwater drones to rid the waterway of mines, Centcom said.

From The Wall Street Journal • Apr. 11, 2026

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

From BBC • Apr. 9, 2026

These diesel-electric subs could cruise underwater on battery power for up to forty-eight hours, but to recharge they needed to approach the surface, take in oxygen, and run their diesel engines.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin