underwater
adjective
un·der·wa·ter
ˌən-dər-ˈwȯ-tər 
-ˈwä-
1
: lying, growing, worn, performed, or operating below the surface of the water
underwater plants
2
: being below the waterline of a ship
3
a
: having, relating to, or being a mortgage loan for which more is owed than the property securing the loan is worth
b
: having, relating to, or being a stock option for which the price of the option is higher than the current market value of the stock
underwater
adverb
Examples of underwater in a Sentence
underwater plants don't require as much light to grow as surface plants
a vessel designed for underwater exploration
Recent Examples on the Web
The veteran broadcaster, who turned 99 last month (and received birthday wishes from William), also shares lighthearted memories from his early days of underwater filming — including struggling to use an old-fashioned diving helmet — before turning to the urgent message of his new film.
—
Simon Perry, People.com, 7 June 2025
The teen was not wearing a life jacket and disappeared after stepping off an underwater shelf, according to a statement from the Austin Police Department cited by the outlet.
—Sophie Clark, MSNBC Newsweek, 7 June 2025
The impressive action set-pieces with Torres on the plane contrast with the underwater combat and agile tandem of the first two sections, showcasing the breadth of both the animation and the background artists’ work.
—Carlos Aguilar, Variety, 6 June 2025
Using cutting-edge camera technology, the film takes us through coral reefs, kelp forests, and other underwater environments, while also wrestling with what human civilization is doing to this fragile but vital biome.
—K. Thor Jensen, PC Magazine, 6 June 2025
See All Example Sentences for underwater
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Simon Perry, People.com, 7 June 2025
The teen was not wearing a life jacket and disappeared after stepping off an underwater shelf, according to a statement from the Austin Police Department cited by the outlet.
—Sophie Clark, MSNBC Newsweek, 7 June 2025
The impressive action set-pieces with Torres on the plane contrast with the underwater combat and agile tandem of the first two sections, showcasing the breadth of both the animation and the background artists’ work.
—Carlos Aguilar, Variety, 6 June 2025
Using cutting-edge camera technology, the film takes us through coral reefs, kelp forests, and other underwater environments, while also wrestling with what human civilization is doing to this fragile but vital biome.
—K. Thor Jensen, PC Magazine, 6 June 2025
See All Example Sentences for underwater
Cite this Entry
“Underwater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underwater. Accessed 10 Jun. 2025.
Copy CitationKids Definition
underwater
adjective
un·der·wa·ter
ˈən-dər-ˈwȯt-ər
-ˈwät-
: lying, growing, worn, performed, or operating below the surface of the water
underwater plants
an underwater cave
underwater
adverb
-ˈwȯt-
-ˈwät-
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