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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

In the leadup to that downturn, investors did not know which banks held the losses from pools of underwater subprime mortgages when the housing market collapsed.

From MarketWatch • Apr. 14, 2026

In another close encounter, while filming underwater a hungry walrus mistook him for a seal and took hold of his legs.

From BBC • Apr. 8, 2026

Seama explains, "The underwater location allows us to implement systematic, large-scale surveys."

From Science Daily • Mar. 29, 2026

It may be underwater somewhere in the Atlantic Ocean today.

From "The (Mostly) True Story of Cleopatra's Needle" by Dan Gutman