as in hazardous
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Recent Examples of Synonyms for ultrahazardous
Adjective
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The study, and the training, include best practices for handling and disposing of hazardous waste, Gabriel said.—
Rachel Becker,
Los Angeles Times,
12 Feb. 2026 -
At least 12 of the 169 chemicals detected in the new analysis have been associated with cancer, birth defects and reproductive issues and are included in California’s Proposition 65 hazardous chemicals list.—
Aude Konan,
Scientific American,
11 Feb. 2026
Adjective
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In order to rule in her favor, jurors will have to parse the harmful actions of fellow users — including her high school bullies and adult men sending her unsolicited nudes — from design decisions made by the companies themselves.—
Sonja Sharp,
Los Angeles Times,
9 Feb. 2026
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Many of these jars contain unknown or poorly documented chemical mixtures that could be toxic to humans or harmful to the specimens themselves if disturbed.—
Neetika Walter,
Interesting Engineering,
9 Feb. 2026
Adjective
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Without a doubt, the MAGA approach to immigration has resulted in detrimental effects to how the Constitution works in our system of justice.—
Rebecca Noel,
Charlotte Observer,
6 Feb. 2026
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The opposite, overwatering, is also detrimental because the seeds may rot.—
Megan Hughes,
Better Homes & Gardens,
28 Jan. 2026
Adjective
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Without reliably cold temperatures, snow is wetter and thinner, conditions are rainier — and for athletes that can be dangerous.—
Laura Paddison,
CNN Money,
10 Feb. 2026
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Luge is the most dangerous of the three sliding sports (bobsled and skeleton are the others) — ironic because athletes in that event actually have the most control.—
Lindsay Schnell,
New York Times,
9 Feb. 2026
Adjective
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Secretary of State Marco Rubio, whose parents left Cuba a few years before Fidel Castro took power, has eyed the regime in Havana as one of the world’s most pernicious, inhumane and troublesome.—
Daniel DePetris,
Chicago Tribune,
3 Feb. 2026
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America’s pernicious relationship with Haiti comes to a head once more this week.—
Ruth Jean-Marie,
Time,
3 Feb. 2026
Adjective
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Elkayam and Sklar were both arrested the day after their son’s death for fentanyl possession and acting in a manner injurious to a child.—
Roni Jacobson,
New York Daily News,
3 Feb. 2026
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According to the lawsuit, staff members told parents their children's injuries were the result of self-injurious behavior.—
Karen Morfitt,
CBS News,
9 Jan. 2026
Adjective
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Kiosks should be designed to detect drug combinations or conditions with higher risks for adverse events and these high-risk scenarios should be automatically flagged for real-time clinician review or to be reviewed within 24 hours of dispensing.—
Mark A. Munger,
STAT,
13 Feb. 2026
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The sharp rise in chocolate prices owes to a cocoa shortage caused primarily by adverse weather and crop disease in West Africa, which accounts for about 70% of the world’s cocoa, some analysts told ABC News.—
Max Zahn,
ABC News,
13 Feb. 2026
Adjective
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Conversely, cannabis appears to be especially deleterious to the cognitive and psychological well-being of young people.—
Alexander Nazaryan,
New Yorker,
29 Jan. 2026
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Studies have shown that routine use of AI has a deleterious impact on cognition, creativity, recall, and critical thinking.—
Krista Kafer,
Denver Post,
25 Jan. 2026
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Cite this Entry
“Ultrahazardous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ultrahazardous. Accessed 15 Feb. 2026.
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