as in aquatic
living, lying, or occurring below the surface of the water
underwater plants don't require as much light to grow as surface plants a vessel designed for underwater exploration
Synonyms & Similar Words
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Example Sentences
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Recent Examples of underwater
The decaying Avenger is one of a dozen wrecks in three very different underwater environments — the western Pacific Ocean off Saipan, Lake Huron, shared by Michigan and Ontario, and the Italian Mediterranean — investigated as part of the ambitious pilot project involving eDNA.
—
Katie Hunt, CNN Money, 7 Nov. 2025
Its 48 breathtaking islands boast incredible history, pristine water, and even underwater wineries.
—Kristine Hansen, Travel + Leisure, 7 Nov. 2025
That sounds like a great excuse to hang out with underwater parkour expert Kirk Krack for several weeks on end — freediving lessons for everyone!
—David Ehrlich, IndieWire, 7 Nov. 2025
Thompson said tourist mecca Montego Bay was underwater.
—Emily Goodin, Miami Herald, 29 Oct. 2025
See All Example Sentences for underwater
Katie Hunt, CNN Money, 7 Nov. 2025
Its 48 breathtaking islands boast incredible history, pristine water, and even underwater wineries.
—Kristine Hansen, Travel + Leisure, 7 Nov. 2025
That sounds like a great excuse to hang out with underwater parkour expert Kirk Krack for several weeks on end — freediving lessons for everyone!
—David Ehrlich, IndieWire, 7 Nov. 2025
Thompson said tourist mecca Montego Bay was underwater.
—Emily Goodin, Miami Herald, 29 Oct. 2025
See All Example Sentences for underwater
Recent Examples of Synonyms for underwater
Adjective
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It was first successfully employed in an aquatic environment in 2008 to detect the presence of an invasive species — the American bullfrog — in France, after more traditional methods of DNA detection, such as audio or visual surveys, had been unsuccessful.—
Katie Hunt,
CNN Money,
7 Nov. 2025
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Visitors can still watch daily mermaid shows, which involve women donning colorful tails performing aquatic dances and stunts.—
Skye Sherman,
Travel + Leisure,
7 Nov. 2025
Adjective
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Last December, lawmakers passed a short-term funding bill that included $5.7 billion in emergency funding for the submarine industrial base.—
Lisa Hagen,
Hartford Courant,
6 Aug. 2025
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Despite the ongoing retirement of older hulls, the PLAN's submarine force is expected to grow to 65 units by 2025 and 80 units by 2035 due to an expansion of submarine construction capacity.—
Ryan Chan,
MSNBC Newsweek,
29 July 2025
Adjective
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Guests can also experience a virtual reality tour of the Titanic that takes them deep into the sea to look at the submerged vessel for a $10 add-on.—
Kansas City Star,
Kansas City Star,
8 Nov. 2025
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Fishermen in the Florida Keys found a submerged jar containing bones and other items early Friday morning, according to the Monroe County Sheriff’s Office.—
David Goodhue,
Miami Herald,
7 Nov. 2025
Cite this Entry
“Underwater.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underwater. Accessed 11 Nov. 2025.
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