1
as in intense
extreme in degree, power, or effect
the hellacious heat was more than we could bear
Synonyms & Similar Words
Relevance
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
Synonyms & Similar Words
Antonyms & Near Antonyms
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 hellacious
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
Playing a school driver who has to get a bunch of kids to safety during a hellacious, out-of-control California fire, McConaughey learned how to drive a bus, grinding gears and everything.
—Brian Truitt, USA Today, 19 Sep. 2025
Having a baby is never an easy experience, but the sixth episode of Outlander: Blood of My Blood plunged poor Julia (Hermione Corfield) into a hellacious labor experience.
—Maureen Lee Lenker, Entertainment Weekly, 6 Sep. 2025
See All Example Sentences for hellacious
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
Playing a school driver who has to get a bunch of kids to safety during a hellacious, out-of-control California fire, McConaughey learned how to drive a bus, grinding gears and everything.
—Brian Truitt, USA Today, 19 Sep. 2025
Having a baby is never an easy experience, but the sixth episode of Outlander: Blood of My Blood plunged poor Julia (Hermione Corfield) into a hellacious labor experience.
—Maureen Lee Lenker, Entertainment Weekly, 6 Sep. 2025
See All Example Sentences for hellacious
Recent Examples of Synonyms for hellacious
Adjective
-
By the final showdown, the production has made use of every bit of stage space, with sensational flying sequences (choreographed by Lauren Yalango-Grant and Christopher Cree Grant) that allow the vampires to float, hover, and—in one especially intense moment—dive from that bridge.—
Emily Nussbaum,
New Yorker,
30 Apr. 2026
-
The moment has sparked an outpouring of empathy, with many pointing to the intense pressure drivers face on the job.—
Alexandra Banner,
CNN Money,
29 Apr. 2026
Adjective
-
Combining all of this in one material has been difficult because thermal control and signal control rely on very different properties.—
Rupendra Brahambhatt,
Interesting Engineering,
3 May 2026
-
Despite the removal of material, the architecture can result in a busy design and potentially make reading the time difficult.—
Paige Reddinger,
Robb Report,
3 May 2026
Adjective
-
The intensive, weeklong building sessions named after former President Jimmy Carter and his late wife Rosalynn have constructed roughly 5,000 homes in 14 countries since 1984.—
ABC News,
ABC News,
1 May 2026
-
The others, though some needed intensive treatments, are stable, the zoo said.—
Cristóbal Reyes,
The Orlando Sentinel,
1 May 2026
Adjective
-
Last year, Blackstone President and COO Jon Gray also told new analysts that working hard and being collaborative are essential skills for success in today’s challenging job market.—
Emma Burleigh,
Fortune,
29 Apr. 2026
-
These Yiddish phrases have gotten me through many challenging situations.—
Gilda Dangot-Simpkin,
Sun Sentinel,
29 Apr. 2026
Adjective
-
This may explain why Suzanna’s mother is a somewhat indistinct presence in the novel (at least compared with fierce Sylvie)—patient, even serene behind bars, more eager to talk about her daughter’s future than about her own future, let alone her troubled past.—
James Wood,
New Yorker,
4 May 2026
-
The Bloomberg-era street transformations weren’t popular at first, and pushback was fierce.—
Jonathan Timm,
New York Daily News,
3 May 2026
Adjective
-
Lightly coated with oil and tossed occasionally in a searing hot skillet or wok, even tough beans turn silky, and ready to coat in a finishing blast of chiles.—
The Bon Appétit Staff,
Bon Appetit Magazine,
1 May 2026
-
Comfortable travel can be achieved with stretchy, breathable pants, but securing a pair that hits those marks while looking stylish can be tough.—
Rachel Trujillo,
Travel + Leisure,
30 Apr. 2026
Adjective
-
Behind a ferocious defense and an offense that couldn’t miss, the Knicks led by 25 points after one quarter, by as many as 51 points in the first half, and by as many as 61 points after halftime.—
Peter Sblendorio,
New York Daily News,
1 May 2026
-
Mo Chara and Móglaí Bap have always been ferocious rappers, two goliaths spitting bilingual bars over gritty electronica with the couplet-completing precision of Run the Jewels.—
Dean Van Nguyen,
Pitchfork,
30 Apr. 2026
Adjective
-
Every personal finance review is based on rigorous reporting by our team of expert writers and editors with extensive knowledge of personal finance products.—
Liz Knueven,
CNBC,
2 May 2026
-
The process began with a rigorous study and a series of strategic partnerships.—
FMG Studios,
Footwear News,
1 May 2026
Cite this Entry
“Hellacious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/hellacious. Accessed 6 May. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
