ULTRAHAZARDOUS Synonyms: 66 Similar and Opposite Words

ultrahazardous

adjective

Definition of ultrahazardous

as in hazardous

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Recent Examples of Synonyms for ultrahazardous

Adjective

As silane and germane are hazardous gases, the researchers also built automated control systems that continuously monitor hundreds of operating conditions, helping maintain both safety and exceptionally high chemical purity throughout production.

— Rupendra Brahambhatt, Interesting Engineering, 26 July 2026
Campers spent the day indoors to avoid hazardous air quality from wildfire smoke.

— Ava Berger, NPR, 26 July 2026

Definition of hazardous

Adjective

Your liver is responsible for breaking down toxins and filtering them out of the body, essentially detoxifying you from harmful substances and chemicals.

— Angelica Bottaro, Verywell Health, 22 July 2026
At our previous Yale CEO Caucus, over two-thirds of CEOs surveyed told us that Trump’s tariffs had been harmful to their own businesses, and 80% said that tariff costs had been passed on in part to consumers.

— Jeffrey Sonnenfeld, Fortune, 22 July 2026

Definition of harmful

Adjective

When atmospheric weather conditions in May drove dangerous pollution levels in Texas, environmental officials urged residents to limit driving and in particular to avoid drive-through lines.

— Los Angeles Times, Los Angeles Times, 26 July 2026
An unchecked ego further erodes psychological safety, as dismissing feedback signals that team contributions are unwelcome, creating dangerous blind spots.

— Dr. Samantha Madhosingh, Forbes.com, 26 July 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

Prices reached record highs over the past two years, triggered by adverse weather conditions and poor cocoa harvests that pushed chocolate costs higher and dampened consumer sentiment.

— Lim Hui Jie, CNBC, 27 July 2026
Potential adverse effects identified by the FDA include heart toxicity, infections, pancreatitis, increased or decreased insulin sensitivity, serious immunoresponses, melanoma and death.

— Sara Moniuszko, USA Today, 24 July 2026

Definition of adverse

Adjective

The quickest way to artificially boost a company’s stock price is to slash R&D, gut capex, and initiate massive share buybacks, often with deleterious long-term consequences.

— Jeffrey Sonnenfeld, Fortune, 6 July 2026
Lawyers have been accused of unnecessary complexity, deleterious delay, excessive cost, and self-interest for centuries.

— Joseph Andrew, Forbes.com, 2 July 2026

Definition of deleterious

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Browse Nearby Words

ultrafine

ultrahazardous

ultraheavy

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“Ultrahazardous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ultrahazardous. Accessed 30 Jul. 2026.

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Synonyms of ultrahazardous

adjective

Example Sentences

Browse Nearby Words

Cite this Entry

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