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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Sarah Buck, Chicago Driving has become harder The rapid increase in bike lanes has made driving much more difficult and tedious, with numerous delays due to many streets being reduced to one lane in busy areas.
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Republican strategists have welcomed those nominations as an opening for attack in a difficult election year.
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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This enduring legacy, underscores the lawyer's role as an officer of the court, preserving the rule of law even when challenging authority.
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Educate your family on our country’s history, both good and 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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