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
  • An unusually intense El Niño event is gathering strength in the tropical Pacific in a hurry.
    — Andrew Freedman, CNN Money, 4 Aug. 2026
  • Thousands of Offers Nazareth University, located near Rochester, New York, is using direct admissions in part to reach those outside of the state where competition for students is particularly intense.
    — Bloomberg, Mercury News, 4 Aug. 2026
Definition of intense
Adjective
  • Establishing that sense of familiarity requires time spent playing and training together, something made more difficult by a constant carousel of new signings.
    — Conor O'Neill, New York Times, 9 Aug. 2026
  • Nugraha said difficult terrain has complicated efforts, with some hotspots located on steep volcanic slopes that are difficult to reach by land.
    — ABC News, ABC News, 9 Aug. 2026
Definition of difficult
Adjective
  • Both these ingredients are extremely energy intensive, raising concerns about energy demands if they are scaled in their current forms.
    — Ameya Paleja, Interesting Engineering, 6 Aug. 2026
  • Companies are exploring off-planet storage, cloud-like computing, AI processing, data sovereignty and potentially power-intensive workloads in orbit.
    — Ben Topor, Forbes.com, 6 Aug. 2026
Definition of intensive
Adjective
  • Enforcing the new ordinance is not as challenging as critics charge, Boone said.
    — Adam Van Brimmer, AJC.com, 8 Aug. 2026
  • In Tony, Bourdain not only flees to Provincetown to follow Nancy, but also to escape his challenging relationship with his parents, Gladys and Pierre Bourdain.
    — Caroline Blair, PEOPLE, 8 Aug. 2026
Definition of challenging
Adjective
  • The scores carry over, promising a fierce battle for the national title, with Rivera aiming for multiple championships.
    — Caroline Price, Forbes.com, 8 Aug. 2026
  • The diggers than turned to keeping themselves and two injured skiers alive amid the fierce blizzard.
    — Andrew Graham, Sacbee.com, 8 Aug. 2026
Definition of fierce
Adjective
  • That left the debtor having to prove the negative that the debtor really didn't have any way to re-establish control over trust assets, and such was (and still is) a very tough sell.
    — Jay Adkisson, Forbes.com, 7 Aug. 2026
  • Lombard also helped turn a double play in the second inning and handled another tough one-hopper hit by Cesar Prieto in the seventh.
    — Peter Sblendorio, New York Daily News, 6 Aug. 2026
Definition of tough
Adjective
  • To the world, McRae is a strong, fearless entertainer, a triple threat who can pen songs that recall the fizzy pop of the early aughts and bring them to life as a ferocious singer and dancer.
    — Steven J. Horowitz, Variety, 3 Aug. 2026
  • In 1970, Milton Friedman’s ferocious political essay in the New York Times, and the agency-theorizing that followed provided sufficient intellectual justification.
    — Steve Denning, Forbes.com, 2 Aug. 2026
Definition of ferocious
Adjective
  • Audit Before You Affirm (or Reject) Before issuing a public statement, conduct a rigorous internal review across all seven areas.
    — David Rosowsky, Forbes.com, 7 Aug. 2026
  • In fact, there is no federal law against providing medical care for transgender adolescents according to the rigorous standards of care.
    — Kaitlin McCallum, Hartford Courant, 7 Aug. 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 10 Aug. 2026.

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