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
Trunk Bay's Underwater Snorkel Trail is a 650-foot-long sea trail complete with underwater plaques identifying the corals, plants, fish, and turtles that inhabit these crystalline waters for the most informative swim of your life.
—
Carley Rojas Avila, Travel + Leisure, 7 Feb. 2026
As part of its longstanding collaboration with non-profit the Tetiaroa Society, the island is also a global hub for underwater discovery, bringing together leading marine biologists and scientists who actively promote the protection of biodiversity on and off land.
—Luke Abrahams, Vogue, 6 Feb. 2026
The county's task force is also looking into purchasing underwater rovers that can be used to check pipes, infrastructure and see how widespread the problem has become over the year.
—Carmela Karcher, CBS News, 6 Feb. 2026
The budding photographer started bringing a camera with him on his underwater adventures to document his dives, with imagery posted on social media sharing sea species such as leopard sharks and swaying kelp forests that dance with the ebb of the ocean.
—Laylan Connelly, Oc Register, 5 Feb. 2026
See All Example Sentences for underwater
Carley Rojas Avila, Travel + Leisure, 7 Feb. 2026
As part of its longstanding collaboration with non-profit the Tetiaroa Society, the island is also a global hub for underwater discovery, bringing together leading marine biologists and scientists who actively promote the protection of biodiversity on and off land.
—Luke Abrahams, Vogue, 6 Feb. 2026
The county's task force is also looking into purchasing underwater rovers that can be used to check pipes, infrastructure and see how widespread the problem has become over the year.
—Carmela Karcher, CBS News, 6 Feb. 2026
The budding photographer started bringing a camera with him on his underwater adventures to document his dives, with imagery posted on social media sharing sea species such as leopard sharks and swaying kelp forests that dance with the ebb of the ocean.
—Laylan Connelly, Oc Register, 5 Feb. 2026
See All Example Sentences for underwater
Recent Examples of Synonyms for underwater
Adjective
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Prescott also has vast outdoor activities with 950 miles of scenic trails and lakes for aquatic activities like kayaking and fishing.—
Paige Moore,
AZCentral.com,
10 Feb. 2026
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The aquatic region was previously protected by an executive order signed by Barack Obama and furthered by Joe Biden.—
Claire Carter,
The Washington Examiner,
6 Feb. 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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On Sunday, their aerial unit located his submerged pickup truck in a canal off East Cypress Creek Road, with his body inside.—
Joan Murray,
CBS News,
27 Jan. 2026
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Later clarification confirmed that the submarine is still preparing for submerged operations.—
Aamir Khollam,
Interesting Engineering,
27 Jan. 2026
Cite this Entry
“Underwater.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underwater. Accessed 16 Feb. 2026.
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