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
With a desirable location on Lake Tahoe, Emerald Bay State Park encompasses an island, a historic Scandinavian-style mansion, and underwater shipwrecks.
—
Evie Carrick, Travel + Leisure, 21 Jan. 2026
The show triggered a yearning for underwater adventure in Dooley, who would go on to become the country’s first maritime archaeologist.
—Julian Sancton, HollywoodReporter, 20 Jan. 2026
The Venus flytrap’s aquatic cousin — the waterwheel plant (Aldrovanda vesiculosa) — also has rapid-closing traps, only they’re tuned to underwater prey.
—Scott Travers, Forbes.com, 20 Jan. 2026
That gave Republicans access to a new group of voters, which could be key to helping lift the party in a year where Trump’s ratings are underwater.
—Nathaniel Weixel, The Hill, 18 Jan. 2026
See All Example Sentences for underwater
Evie Carrick, Travel + Leisure, 21 Jan. 2026
The show triggered a yearning for underwater adventure in Dooley, who would go on to become the country’s first maritime archaeologist.
—Julian Sancton, HollywoodReporter, 20 Jan. 2026
The Venus flytrap’s aquatic cousin — the waterwheel plant (Aldrovanda vesiculosa) — also has rapid-closing traps, only they’re tuned to underwater prey.
—Scott Travers, Forbes.com, 20 Jan. 2026
That gave Republicans access to a new group of voters, which could be key to helping lift the party in a year where Trump’s ratings are underwater.
—Nathaniel Weixel, The Hill, 18 Jan. 2026
See All Example Sentences for underwater
Recent Examples of Synonyms for underwater
Adjective
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Up to 3,000 spectators gathered on Sundays to watch aquatic shows, synchronized swimmers, and fashion shows that defined an era.—
Lisa A. Beach,
Southern Living,
23 Jan. 2026
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Speedo’s parent company, Pentland Brands, plans to move its North American headquarters from Orange County to Long Beach, which has emerged as a hub for aquatic sports for the upcoming Summer Olympics in Los Angeles.—
Iris Kwok,
Los Angeles Times,
22 Jan. 2026
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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Researchers from the Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Kyoto University, and partner institutions published a high-resolution 3D reconstruction of the submerged settlement using multibeam echo-sounder surveys combined with historical cadastral maps.—
Kaif Shaikh,
Interesting Engineering,
14 Jan. 2026
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Boats often post up in the channel between the two islands, where sculptor Jason deCaires Taylor designed the first underwater eco-museum in France and the Mediterranean—the six submerged statues are in water shallow enough to snorkel around.—
Lane Nieset,
Travel + Leisure,
22 Dec. 2025
Cite this Entry
“Underwater.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underwater. Accessed 29 Jan. 2026.
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