1
as in unfathomable
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as in deep-sea
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Recent Examples of abyssal
For its part, TMC intends to have large vessels out at sea deploying collector vehicles down to abyssal depths of 2.5-3.75 miles (4-6 km) in the Clarion Clipperton Zone in the Pacific Ocean.
—
New Atlas, 5 Apr. 2025
Seamounts are underwater mountains that rise hundreds or thousands of feet from the seafloor and can provide a vital habitat for marine life, while abyssal hills are smaller, underwater mounds.
—Josh Hammer, MSNBC Newsweek, 1 Apr. 2025
Three years of computer modeling found the Antarctic overturning circulation – also known as abyssal ocean overturning – is on track to slow 42% by 2050 if the world continues to burn fossil fuels and produce high levels of planet-heating pollution.
—Hilary Whiteman, CNN, 29 Mar. 2023
As an open-source project, C:DDA has its inner workings posted freely online, where anyone with a working knowledge of C++ can dive in and add weapons, recipes, and more information into the simulation's already abyssal depths.
—Eric Limer, Popular Mechanics, 17 Dec. 2018
Even here, though, abyssal tuba notes exposed a sonic substratum.
—Alex Ross, The New Yorker, 21 Apr. 2017
Before New Horizons flew by, scientists thought there wouldn’t be much in the way of geological activity happening out there on the fringe, where temperatures are decidedly abyssal and materials tend to freeze in place.
—National Geographic, 14 July 2016
New Atlas, 5 Apr. 2025
Seamounts are underwater mountains that rise hundreds or thousands of feet from the seafloor and can provide a vital habitat for marine life, while abyssal hills are smaller, underwater mounds.
—Josh Hammer, MSNBC Newsweek, 1 Apr. 2025
Three years of computer modeling found the Antarctic overturning circulation – also known as abyssal ocean overturning – is on track to slow 42% by 2050 if the world continues to burn fossil fuels and produce high levels of planet-heating pollution.
—Hilary Whiteman, CNN, 29 Mar. 2023
As an open-source project, C:DDA has its inner workings posted freely online, where anyone with a working knowledge of C++ can dive in and add weapons, recipes, and more information into the simulation's already abyssal depths.
—Eric Limer, Popular Mechanics, 17 Dec. 2018
Even here, though, abyssal tuba notes exposed a sonic substratum.
—Alex Ross, The New Yorker, 21 Apr. 2017
Before New Horizons flew by, scientists thought there wouldn’t be much in the way of geological activity happening out there on the fringe, where temperatures are decidedly abyssal and materials tend to freeze in place.
—National Geographic, 14 July 2016
Recent Examples of Synonyms for abyssal
Adjective
-
The years slowly moved away from us, its silence uncanny, but the smell of carcasses was unfathomable.—
Literary Hub,
Literary Hub,
3 Sep. 2025
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The scale of the devastation is unfathomable.—
R. Daniel Foster,
Forbes.com,
27 Aug. 2025
Adjective
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Jackson Denio, who stands 5-foot-9 and weighs 120 pounds, set out on an overnight deep-sea fishing trip with about 30 other people off Cashes Ledge, a fishing ground off the New England Coast.—
Deirdre Bardolf,
FOXNews.com,
6 Sep. 2025
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Using high-resolution bathymetric maps from its deep-sea sonar surveys, along with real-time oceanographic data on temperature, salinity, and currents collected by buoys and research vessels, the PLA has built detailed models of acoustic propagation.—
Bojan Stojkovski,
Interesting Engineering,
31 Aug. 2025
Adjective
-
Steve Martin, Martin Short and Selena Gomez are seemingly unstoppable, and their building has a seemingly infinite number of murders in this Hulu mystery comedy.—
Kelly Lawler,
USA Today,
4 Sep. 2025
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If the original function has a sharp edge, like the square wave below (which is often found in digital signals), the Fourier transform will produce an infinite set of frequencies that, when added together, approximate the edge as closely as possible.—
Shalma Wegsman,
Quanta Magazine,
3 Sep. 2025
Adjective
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Those offshore turbines are dramatically larger than ones on land and require substantial infrastructure at ports for construction, from large assembly facilities to deepwater docks for ships that carry turbines out to sea.—
Lauren Sommer,
NPR,
31 Aug. 2025
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By this year, deepwater oil will account for 10% of global crude supply, according to Rystad Energy.—
Ian Dexter Palmer,
Forbes.com,
29 Aug. 2025
Adjective
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That raised officially reported deaths from such causes to at least 361, including 130 children, the vast majority in recent weeks.—
Emily Rose,
USA Today,
3 Sep. 2025
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The vast majority of guns do not come from Chicago.—
Washington Examiner Staff,
The Washington Examiner,
3 Sep. 2025
Adjective
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According to the study authors, these changes can be tied to stagnation and decline in the ocean’s biodiversity, particularly among benthic animals, or animals associated with the bottom of the sea, such as corals, crustaceans, and brachiopods.—
Sam Walters,
Discover Magazine,
24 June 2025
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The scientists noticed a drop in their prey, such as small pelagic fishes in the case of seals and smaller benthic sharks in the case of sevengill sharks.—
Rick Sobey,
Boston Herald,
27 Apr. 2025
Adjective
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Meanwhile, offshore, the Oregon Islands National Wildlife Refuge pulses with life: think harbor seals, black oystercatchers, and pelagic cormorants.—
Lewis Nunn,
Forbes.com,
8 Aug. 2025
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But since these pelagic fish spend most of their time at depths of 1,000 feet or more, and are typically only caught by ocean longliners, scientists are still trying to understand their biology and life histories.—
Dac Collins,
Outdoor Life,
18 June 2025
Adjective
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This natural formation of limestone rocks is a popular place to look for fish and other marine life, including dolphins.—
Lisa Cericola,
Southern Living,
5 Sep. 2025
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Scientists have also predicted that such events could become more common due to factors such as global warming, the arrival of invasive marine species, habitat loss of predators, and over-fishing.—
Atharva Gosavi,
Interesting Engineering,
5 Sep. 2025
Cite this Entry
“Abyssal.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/abyssal. Accessed 10 Sep. 2025.
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