1
as in intense
extreme in degree, power, or effect
the hellacious heat was more than we could bear
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Antonyms & Near Antonyms
2
as in difficult
requiring considerable physical or mental effort
the pioneers survived a particularly hellacious river crossing with their covered wagon barely in one piece
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Recent Examples of hellacious
Even in the hellacious conditions of Greater Los Angeles, the suspension absorbs severe potholes, broken surfaces and expansion joints with little more than the sound of a muffled timpani strike.
—
Mark Ewing, Forbes.com, 2 Aug. 2025
The other nailed two runners on the bases with some of the most hellacious throws anyone had ever seen.
—Tyler Kepner, New York Times, 11 July 2025
Just when the series appeared to begin tilting toward Indiana deep into Game 4, with a 3-1 Pacers lead a real possibility, Lu Dort's hellacious defense helped force Indiana into tough shots and Shai Gilgeous-Alexander's scoring rescued Oklahoma City.
—Andrew Greif, NBC news, 18 June 2025
Lineups featuring the trio of Dunn-Jones-Leonard are going to be hellacious.
—Shane Young, Forbes, 13 Dec. 2024
See All Example Sentences for hellacious
Mark Ewing, Forbes.com, 2 Aug. 2025
The other nailed two runners on the bases with some of the most hellacious throws anyone had ever seen.
—Tyler Kepner, New York Times, 11 July 2025
Just when the series appeared to begin tilting toward Indiana deep into Game 4, with a 3-1 Pacers lead a real possibility, Lu Dort's hellacious defense helped force Indiana into tough shots and Shai Gilgeous-Alexander's scoring rescued Oklahoma City.
—Andrew Greif, NBC news, 18 June 2025
Lineups featuring the trio of Dunn-Jones-Leonard are going to be hellacious.
—Shane Young, Forbes, 13 Dec. 2024
See All Example Sentences for hellacious
Recent Examples of Synonyms for hellacious
Adjective
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Fan Kelly Terzis described her feelings as intense sadness and grief, but also gratitude.—
Amanda Hari,
CBS News,
11 Jan. 2026
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The study made a significant contribution, if not clarification, to this academic niche — medieval migration wasn’t seasonal, nor sporadic and intense.—
Maria Mocerino,
Interesting Engineering,
11 Jan. 2026
Adjective
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Jens generally chooses his words carefully, and is, what’s more, particularly reticent just after finishing a long and difficult winter delivery trip; what’s a person supposed to do with words in a blizzard anyway, up on a stormy heath and all directions lost?—
Literary Hub,
Literary Hub,
10 Nov. 2025
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In his first start in the wake of Beau Pribula’s significant injury, Zollers walked into a difficult situation, and his stat line reflected it.—
Maddie Hartley,
Kansas City Star,
9 Nov. 2025
Adjective
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Between 2022 and 2023, a team from Arkeologerna conducted an intensive investigation in the southernmost area of the former city.—
Maria Mocerino,
Interesting Engineering,
9 Nov. 2025
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The orbiters are expected to linger in a holding pattern before heading for Mars next year when the red planet is better aligned for a less fuel-intensive journey.—
Jackie Wattles,
CNN Money,
9 Nov. 2025
Adjective
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But last month, Critchfield backed off in the face of a challenging state budget.—
Becca Savransky,
Idaho Statesman,
8 Jan. 2026
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Depending on where in the country your family lives, winter can be a challenging time for kids who are cooped up inside amid the chillier weather.—
Mia Taylor,
Parents,
7 Jan. 2026
Adjective
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Some nearby residents, including Sue Weston — the owner of Weston Gardens in Bloom, a historic garden located on Anglin Drive — have expressed fierce opposition to the data center.—
Emily Holshouser,
Fort Worth Star-Telegram,
7 Jan. 2026
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Last year, the governor tried to increase the number of in-office days to four only to face fierce resistance from his employees and their labor representatives.—
William Melhado,
Sacbee.com,
6 Jan. 2026
Adjective
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This loss had to be especially tough for the Jayhawks, considering a controversial holding call on KU changed the momentum of the game.—
Gary Bedore,
Kansas City Star,
9 Nov. 2025
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However, their record at the Etihad makes for tough reading.—
Andy Jones,
New York Times,
9 Nov. 2025
Adjective
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Protecting Rodgers against the Texans’ ferocious pass rush represents a tall task, though.—
Mike Jones,
New York Times,
10 Jan. 2026
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Aside from being a general nuisance with their ferocious snores, pungent odors and growls, bears can do serious damage to a home.—
Hannah Fry,
Los Angeles Times,
9 Jan. 2026
Adjective
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Every credit card review is based on rigorous reporting by our team of expert writers and editors.—
Harlan Vaughn,
CNBC,
8 Nov. 2025
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The Encinitas Green Business Network provides a rigorous framework for local organizations to reduce their environmental footprint through actionable, practical, and high-impact improvements.—
News Release,
San Diego Union-Tribune,
8 Nov. 2025
Cite this Entry
“Hellacious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/hellacious. Accessed 11 Jan. 2026.
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