underwater

adjective

ˌən-dər-ˈwȯ-tər How to pronounce underwater (audio)
Definition of underwaternext
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

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of underwater Audiences can expect natural richness, such as underwater images of glistening shellfish, to encounter ecological dread. — Georg Szalai, HollywoodReporter, 2 Oct. 2026 The shipyard is one of Italy’s leading centers of excellence for the design and construction of technologically advanced underwater units. — Prabhat Ranjan Mishra, Interesting Engineering, 2 Oct. 2026 Those range from the macro-industrial such as aircraft parts and underwater pipelines to the micro-medical such as stents that prop open bodily channels for bodily fluids. — New Atlas, 2 Oct. 2026 The team analyzed maps showing where continents lay underwater or dry at 10-million-year time points. — Jacek Krywko, Scientific American, 1 Oct. 2026 See All Example Sentences for underwater
Recent Examples of Synonyms for underwater
  1. aquatic
  2. submarine
  3. submerged
Adjective
  • The warm aquatic pulse could add 6 to 12 inches to background sea levels for months and cause flooding if there are storms or high tides, like the swell from distant Hurricane Rachel expected to peak Thursday and Friday.
    — Blanca Begert, Los Angeles Times, 8 Oct. 2026
  • Paired as Music for Two Films About Water, the untitled scores accompany aquatic shorts by the artists Tanja Engelberts (We Exhale) and Takashi Makino (Constellation).
    — Jazz Monroe, Pitchfork, 8 Oct. 2026
Definition of aquatic
Adjective
  • The third pillar expands on this approach by increasing the capacity of the wider submarine industrial base.
    — Georgina Jedikovska, Interesting Engineering, 22 Sep. 2026
  • But a new antenna technology, borrowed from the physics of medical implants, is rethinking how submarine machines talk to each other – and to us.
    — Omar Kardoudi June 06, New Atlas, 6 June 2026
Definition of submarine
Adjective
  • Advanced blue-green optical communications penetrate the water column to communicate with submerged submarines without requiring them to deploy compromise-prone antennas.
    — Rohit Jha, Forbes.com, 1 Oct. 2026
  • Rescue teams recovered four bodies from inside the submerged vessel on Friday, while seven more were found along nearby shorelines, Bramantyo said.
    — ABC News, ABC News, 27 Sep. 2026
Definition of submerged

Browse Nearby Words

undervaluing
underwater
under way
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Cite this Entry

“Underwater.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underwater. Accessed 15 Oct. 2026.

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