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
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Example Sentences
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Recent Examples of underwater
Prior to 2019, only four underwater archaeological sites were known in the area, and only one of those could be considered the result of a shipwreck, according to the researchers.
—
Amarachi Orie, CNN Money, 22 Apr. 2026
Kimberly Jeffries is an underwater cinematographer and photographer based in Hawai’i, known for her work in marine conservation and diving.
—Photovogue, Vogue, 22 Apr. 2026
Officials worked with Mi’kmaw archaeological technicians alongside both underwater and terrestrial archaeologists to excavate and document the wreck, adapting their methods to Sable Island's shifting sands.
—Andrea Margolis, FOXNews.com, 20 Apr. 2026
Mussels, for instance, create strong underwater adhesives and fibers through dense protein droplets.
—Alexandra Harrell, Footwear News, 20 Apr. 2026
See All Example Sentences for underwater
Amarachi Orie, CNN Money, 22 Apr. 2026
Kimberly Jeffries is an underwater cinematographer and photographer based in Hawai’i, known for her work in marine conservation and diving.
—Photovogue, Vogue, 22 Apr. 2026
Officials worked with Mi’kmaw archaeological technicians alongside both underwater and terrestrial archaeologists to excavate and document the wreck, adapting their methods to Sable Island's shifting sands.
—Andrea Margolis, FOXNews.com, 20 Apr. 2026
Mussels, for instance, create strong underwater adhesives and fibers through dense protein droplets.
—Alexandra Harrell, Footwear News, 20 Apr. 2026
See All Example Sentences for underwater
Recent Examples of Synonyms for underwater
Adjective
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The Seminoles held off West Orange 8-4 in Saturday’s final at the Belen school’s aquatic center in Miami.—
Steve Gorches,
The Orlando Sentinel,
25 Apr. 2026
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These massive mollusks may even have eaten large aquatic reptiles like mosasaurs and plesiosaurs, which were themselves believed to be among the main marine predators of the time.—
Adam England,
PEOPLE,
24 Apr. 2026
Adjective
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One of the major functions of modern navies is submarine hunting.—
New Atlas,
New Atlas,
18 Jan. 2026
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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
Adjective
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Scientists with the Environmental Defense Fund said in a 2019 study that hydropower plants and reservoirs can emit substantial greenhouse gases, but their depth and design, the amount of submerged vegetation, and local climate influence how much.—
Ian James,
Los Angeles Times,
15 Apr. 2026
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But during that maneuver, the vehicle likely reversed into the water and became submerged.—
Brandon Downs,
CBS News,
13 Apr. 2026
Cite this Entry
“Underwater.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underwater. Accessed 28 Apr. 2026.
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