ultrahazardous

adjective

Definition of ultrahazardousnext
as in hazardous

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Example Sentences

Recent Examples of Synonyms for ultrahazardous
  1. hazardous
  2. harmful
  3. detrimental
  4. dangerous
  5. pernicious
  6. injurious
  7. adverse
  8. deleterious
Adjective
  • The combination of volcanic activity and sudden weather changes can make conditions on the mountain particularly hazardous.
    — Anna Matranga, CBS News, 17 Aug. 2026
  • The destruction of the ozone layer would allow hazardous ultraviolet radiation to rain down on the planet, adding to the series of climate cataclysms that would threaten civilization and most life on Earth.
    — Kevin Holden Platt, Forbes.com, 16 Aug. 2026
Definition of hazardous
Adjective
  • These spurious claims about childhood vaccines will only increase vaccine hesitation with harmful results.
    — Sun Sentinel Editorial Board, Sun Sentinel, 13 Aug. 2026
  • One reason for this is that peppermint oil has known antimicrobial properties and can destroy harmful microorganisms.
    — BestReviews, Chicago Tribune, 13 Aug. 2026
Definition of harmful
Adjective
  • These can be detrimental to a business owner and the success of their businesses.
    — Simone Lundquist, Forbes.com, 10 Aug. 2026
  • Both receptors are common on human airway cells High levels of stimulation are detrimental, the researchers wrote, whereas moderate levels indicating small amounts of time spent in cowsheds seemed to be beneficial.
    — Baltimore Sun, Boston Herald, 9 Aug. 2026
Definition of detrimental
Adjective
  • On Sunday, storms brought dangerous flash flooding to the area around the Aspen Acres burn scar.
    — Christa Swanson, CBS News, 17 Aug. 2026
  • That makes the world a more dangerous place, where a mistake by just one actor could ignite a regional firestorm, with a US military weakened by Iran unable to ensure American security.
    — Brad Lendon, CNN Money, 17 Aug. 2026
Definition of dangerous
Adjective
  • But herein also lie some of the issues that de-normalizing alcohol consumption brings to light, including its overlap with other, equally pernicious public health crises.
    — Tim Brinkhof, Time, 23 July 2026
  • Spector is clearly concerned with the pernicious consequences of technology, its ability to numb emotions and steer people into ideological cul-de-sacs.
    — Emily Nussbaum, New Yorker, 9 July 2026
Definition of pernicious
Adjective
  • The suit makes three claims against the organization (defamation, tortious interference and injurious falsehood) and asks a judge to award Barth and his firm more than $10 million in damages.
    — Kacen Bayless, Kansas City Star, 7 July 2026
  • Kevin Maxwell, 37, of Canarsie, Brooklyn, was charged with assault and menacing, both as hate crimes, and acting in a manner injurious to a child.
    — John Annese, New York Daily News, 5 July 2026
Definition of injurious
Adjective
  • Her lawsuit made a number of claims of adverse employment actions.
    — Ted Johnson, Deadline, 16 Aug. 2026
  • Ask for the specific reasons in writing, specifically naming the adverse action notice requirement.
    — TerDawn DeBoe, Forbes.com, 15 Aug. 2026
Definition of adverse
Adjective
  • During this time, bogs, marshes, and other wetlands, historically seen as disease-ridden and deleterious to human health, were reevaluated by scientists and conservationists as valuable wildlife habitats.
    — Encyclopedia Britannica, Encyclopedia Britannica, 24 July 2026
  • The effects of this are going to be really deleterious to this whole thing.
    — Jasmin Malik Chua, Footwear News, 23 July 2026
Definition of deleterious
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.

Browse Nearby Words

ultrafine
ultrahazardous
ultraheavy
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Cite this Entry

“Ultrahazardous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ultrahazardous. Accessed 18 Aug. 2026.

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