hellacious

adjective

ˌhe-ˈlā-shəs How to pronounce hellacious (audio)
Definition of hellaciousnext
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

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 His hellacious brand of defense is a nightmare for opposing benches in particular. — Bryan Toporek, Forbes.com, 18 May 2026 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 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
  1. intense
  2. difficult
  3. intensive
  4. challenging
  5. fierce
  6. tough
  7. ferocious
  8. rigorous
Adjective
  • His plan, scheduled for a vote at the Beach commission on Wednesday after two years of often-intense debate and revision, comes in the prosaic form of a technical zoning change.
    — Andres Viglucci, Miami Herald, 22 July 2026
  • Criticism from the political left was, predictably, swift and intense.
    — Ian Miller OutKick, FOXNews.com, 22 July 2026
Definition of intense
Adjective
  • Strickland said even getting equipment on the road during construction can be difficult for farmers.
    — Maven Navarro, Fort Worth Star-Telegram, 26 July 2026
  • While following the money may be difficult, there are other signs of the growing role of organized crime in politics.
    — Mary Beth Sheridan, CNN Money, 25 July 2026
Definition of difficult
Adjective
  • The Warrior-Scholar Project is a STEM intensive founded in 2012 at Yale and has served nearly 3,000 veterans, challenging them with up to 75 hours of academic work.
    — Francesca Pinney, Los Angeles Times, 30 July 2026
  • The company believes those products could support several parts of the defense manufacturing chain, particularly facilities involved in shipbuilding, advanced materials production and energy-intensive industrial operations.
    — Aamir Khollam, Interesting Engineering, 30 July 2026
Definition of intensive
Adjective
  • In April, DeepSeek rolled out previews of its latest V4 model, challenging OpenAI’s GPT and Google’s Gemini.
    — ABC News, ABC News, 26 July 2026
  • As a business owner, Maloney says, the most rewarding and most challenging aspect of the job is making all the decisions and solving every problem.
    — Claire Hall, Hartford Courant, 25 July 2026
Definition of challenging
Adjective
  • This video shows firefighters battling fierce flames ripping through vegetation, propelled, in part, by strong gusts of wind.
    — Laura Paddison, CNN Money, 27 July 2026
  • Liverpool were trailing 2-1 early in the second half when the midfielder chested the ball down just outside the box and unleashed a fierce strike past Melker Ellborg.
    — James Pearce, New York Times, 26 July 2026
Definition of fierce
Adjective
  • The city's local Democratic lawmakers claim that the tough-on-crime policies only temporarily reduced crime while troop presence was at its peak.
    — ABC News, ABC News, 31 July 2026
  • Lopez and multiple bullpen arms got out of tough jams to limit the Red Sox 16 baserunners across the first nine innings to just two runs, only one earned.
    — Sean Campbell, Sacbee.com, 30 July 2026
Definition of tough
Adjective
  • Emergency crews are still scrambling to contain ferocious blazes in Spain and France, where authorities have warned wildfires could burn for several months before they are fully extinguished.
    — Billy Stockwell, CNN Money, 28 July 2026
  • One is among the most ferocious forces in the sport, a bona fide ace who is must-see TV.
    — Cody Stavenhagen, New York Times, 26 July 2026
Definition of ferocious
Adjective
  • Academy leaders have repeatedly told Congress that rigorous scholarship, civilian faculty expertise and exposure to complex questions help prepare officers for the uncertainty of modern warfare.
    — James LaPorta, CBS News, 31 July 2026
  • The progress marks the transition from years of design, research, and technology demonstrations to the construction of physical aircraft that will undergo rigorous testing before entering operational service.
    — Prabhat Ranjan Mishra, Interesting Engineering, 31 July 2026
Definition of rigorous

Browse Nearby Words

hell
hellacious
hell-bent
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Cite this Entry

“Hellacious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/hellacious. Accessed 1 Aug. 2026.

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