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 facility has sign for consumer advisory for undercooked food, and the potentially hazardous items are marked, but the sign is lacking asterisks.
    — Arkansas Online, Arkansas Online, 12 Oct. 2026
  • The production was shut down in Livingston, Montana last Saturday when locals complained about the production’s impact on the Livingston food bank and improper warnings about hazardous stunts.
    — Pat Saperstein, Variety, 10 Oct. 2026
Definition of hazardous
Adjective
  • Local government and outside groups have long strived to ban the popular tourist attraction that critics argue is harmful to horses’ well-being.
    — Claire Carter, The Washington Examiner, 14 Oct. 2026
  • Waters are becoming cloudier overall, while harmful algal blooms — measured through chlorophyll a levels — are trending in the wrong direction, the report found.
    — Adam Thompson, CBS News, 14 Oct. 2026
Definition of harmful
Adjective
  • Early detection is also instrumental to addressing chronic absenteeism, classroom misconduct and student disconnectedness detrimental to any learning environment.
    — Vanessa Andersen, Chicago Tribune, 8 Oct. 2026
  • Brown was suspended for conduct detrimental to the team in 1997 and then was cut.
    — ABC News, ABC News, 7 Oct. 2026
Definition of detrimental
Adjective
  • When threatening phone calls begin and a dangerous fugitive surfaces in town, Jenny grows suspicious of everyone around her as the danger begins closing in.
    — Glenn Garner, Deadline, 11 Oct. 2026
  • One of the reasons being an actor is both dangerous and a privilege is that your job is to think about all the different roads your life could take, and all the people that live inside you, and all your potential.
    — Sarah Larson, New Yorker, 11 Oct. 2026
Definition of dangerous
Adjective
  • Courtesy of WorldSkills Is one of the world’s most pernicious social stigmas finally lifting?
    — the Monitor's Editorial Board, Christian Science Monitor, 8 Oct. 2026
  • Obscured Releasing has acquired North American distribution rights to The Drug in Our Pocket, a documentary by Anne Sundberg about the pernicious effects on young people of constant smartphone use.
    — Matthew Carey, Deadline, 2 Oct. 2026
Definition of pernicious
Adjective
  • White House advisers have argued that his vision would be politically injurious ahead of the midterms.
    — Dhruv Khullar, New Yorker, 25 Aug. 2026
  • Strengthening balance is critical to help older adults prevent injurious falls.
    — Deborah Vankin, Los Angeles Times, 18 Aug. 2026
Definition of injurious
Adjective
  • Gastrointestinal problems, such as nausea, were the most common adverse events, generally experienced as doses were increased.
    — Mike McRae October 09, New Atlas, 10 Oct. 2026
  • The team’s findings, published last week in Nature Communications, reveal that, when given such a drug, rodents suffer adverse reactions similar to the paranoia human cannabis users feel.
    — Cody Cottier, Scientific American, 7 Oct. 2026
Definition of adverse
Adjective
  • The backlash against this perfectly reasonable post demonstrates the deleterious effect of mass immigration on our democratic system.
    — Matthew Ablon, CBS News, 14 Sep. 2026
  • 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
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 17 Oct. 2026.

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