1
as in intense
extreme in degree, power, or effect
the hellacious heat was more than we could bear
Synonyms & Similar Words
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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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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of hellacious
The skiers were in a valley below Perry Peak, but the two survivors have described battling through hellacious conditions in the hour before the avalanche.
—
Andrew Graham
april 2,
Sacbee.com,
2 Apr. 2026
But the tour was a hellacious time for Bachman.
—
Andy Greene,
Rolling Stone,
28 Feb. 2026
Edmonton superstar Connor McDavid dished out three assists and a hellacious hit on Czechia forward Lukas Sedlec on his first shift early in the first period that set the tone for a fast paced, hard hitting and unselfish display of often breathtaking hockey.
—
Scott M. Reid,
Oc Register,
13 Feb. 2026
Even against a hellacious Houston defense, the Patriots’ shortest path to victory is to ask Maye to carry them yet again.
—
Andrew Callahan,
Boston Herald,
15 Jan. 2026
See All Example Sentences for hellacious
Andrew Graham
april 2,
Sacbee.com,
2 Apr. 2026
But the tour was a hellacious time for Bachman.
—
Andy Greene,
Rolling Stone,
28 Feb. 2026
Edmonton superstar Connor McDavid dished out three assists and a hellacious hit on Czechia forward Lukas Sedlec on his first shift early in the first period that set the tone for a fast paced, hard hitting and unselfish display of often breathtaking hockey.
—
Scott M. Reid,
Oc Register,
13 Feb. 2026
Even against a hellacious Houston defense, the Patriots’ shortest path to victory is to ask Maye to carry them yet again.
—
Andrew Callahan,
Boston Herald,
15 Jan. 2026
See All Example Sentences for hellacious
Recent Examples of Synonyms for hellacious
Adjective
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Indie Shakes managing director David Melville distills his production around scenes of intense conflict.
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As the planet warms, extreme heat events are becoming more common, intense and long-lasting.
Adjective
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Aviation experts said those conditions would have been difficult to navigate that evening when the helicopter, a Robinson R66, crashed in the Dawson Forest Wildlife Management Area.
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But traffic on the waterway remains a fraction of pre-war levels with different authorities vying to organize the transit of vessels, leaving operators with a difficult choice over which path to take.
Adjective
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The jockeys take on months of intensive training in order to ride in the Ladies’ Race.
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On the flip side, semiconductor manufacturing is one of the most complex and energy-intensive industrial processes in the world, with emissions projected to reach 277 million metric tons of CO₂ equivalent by 2030.
Adjective
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Keeping your hair looking and feeling shiny can be challenging, but not with this hair kit.
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Los Angeles Fire Department Chief Jaime Moore said that fighting the fire had been extremely challenging.
Adjective
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The 2023 arrest of her then-10-year-old cousin for urinating in public brought fierce condemnation.
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For a party that prides itself on diversity, the clashes have exacerbated fierce debates over identity politics and long-standing rifts between progressives and moderates.
Adjective
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MacDonald agrees that some of Kiros' positions could put Democratic candidates in a tough spot.
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The 34 measures include cuts to income tax for low- and middle income families, an overhaul of the creaking pension system, tougher rules for employees' sick leave and a reduction of the country's stifling bureaucracy.
Adjective
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Speaking of, Ross asked Janssen about the steamy bathhouse scene during which Xenia and Bond face off in an encounter that is both flirty and ferocious.
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In 2018, a blaze east of Athens moved with ferocious speed, killing more than 100 people.
Adjective
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Every cybersecurity article is based on rigorous reporting by our team of expert writers and editors.
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This improves both customer and agent experience, while still meeting rigorous business standards around accuracy, reliability, and risk management.
Cite this Entry
“Hellacious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/hellacious. Accessed 5 Jul. 2026.
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