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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.

We’re sitting on opposite ends of an underwater “sea-saw.”

From Los Angeles Times • Jun. 1, 2026

A specialist operation, including underwater searches, remains ongoing and the boy's family is being supported, South Yorkshire Police said.

From BBC • May 31, 2026

It would also help them deal with threats "including to our underwater cables and pipelines on which so much of our daily life depends".

From BBC • May 30, 2026

"They are extremely colorful and can be spotted on coral reef ecosystems. However, many nudibranchs are very small in size and are extremely difficult to spot underwater with the naked eye."

From Science Daily • May 27, 2026

“Yeah, but you did teach me to do an underwater flip. I wouldn’t be much of a mermaid without that.”

From "Popcorn" by Rob Harrell




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