1
as in hazardous
involving potential loss or injury
the soldiers were specially selected to go on a dangerous mission behind enemy lines
Synonyms & Similar Words
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Antonyms & Near Antonyms
2
as in harmful
causing or capable of causing harm
the common knowledge that smoking is dangerous to one's health hasn't stopped some people
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of dangerous
The sport was transgressive, in a way—it was prohibited in Norway from 1978 to 1989 for being too dangerous for youth.
—
Margaret Talbot, New Yorker, 3 Nov. 2025
Jasper County Sheriff Randy Johnson said initial reports from the truck's occupants warned that the monkeys were dangerous and potentially carried diseases.
—Stephen Sorace, FOXNews.com, 3 Nov. 2025
The two men — a 20-year-old from Carey Park and a 23-year-old from Australind — were removed from the venue and will face court for the dangerous stunt.
—Jessica Lynch, Billboard, 3 Nov. 2025
It is considered a serious condition and can be dangerous or life-threatening, especially to older adults, people with weak immune systems and pregnant women.
—Mary Walrath-Holdridge, Freep.com, 3 Nov. 2025
See All Example Sentences for dangerous
Margaret Talbot, New Yorker, 3 Nov. 2025
Jasper County Sheriff Randy Johnson said initial reports from the truck's occupants warned that the monkeys were dangerous and potentially carried diseases.
—Stephen Sorace, FOXNews.com, 3 Nov. 2025
The two men — a 20-year-old from Carey Park and a 23-year-old from Australind — were removed from the venue and will face court for the dangerous stunt.
—Jessica Lynch, Billboard, 3 Nov. 2025
It is considered a serious condition and can be dangerous or life-threatening, especially to older adults, people with weak immune systems and pregnant women.
—Mary Walrath-Holdridge, Freep.com, 3 Nov. 2025
See All Example Sentences for dangerous
Recent Examples of Synonyms for dangerous
Adjective
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The result, Kahn says, is that parts of Earth’s orbital environment are rife with hazardous objects that can collide with vital space infrastructure.—
Humberto Basilio,
Scientific American,
7 Nov. 2025
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All seven patients were cleared almost immediately and no hazardous materials turned up on base, Fox News is told.—
Jennifer Griffin , Christina Shaw,
FOXNews.com,
7 Nov. 2025
Adjective
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Specialty cleaners made for glass cooktops don’t contain harmful ingredients like ammonia.—
Karen Brewer Grossman,
Southern Living,
5 Nov. 2025
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Small settings changes can make a big difference in reducing exposure to harmful or suggestive content.—
Kurt Knutsson,
FOXNews.com,
5 Nov. 2025
Adjective
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The right-hander generated a ground ball to get the force out at home in an extremely close call, and the very next pitch was a risky fly out tracked down by Andy Pages (who entered the game after the bases were loaded).—
Gabe Smallson,
MSNBC Newsweek,
6 Nov. 2025
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The seedless doctrine For years, Tangem campaigned against seed phrases as risky and error-prone, arguing that paper or metal backups become a single, theft-prone secret that ordinary people routinely mishandle.—
Wyles Daniel,
USA Today,
6 Nov. 2025
Adjective
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And since there aren’t special teams in basketball, being bad at both is pretty detrimental.—
Zach Harper,
New York Times,
3 Nov. 2025
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Harsh Water Exposure Pool water and ocean water can both be detrimental to keeping your color vibrant.—
Kaitlyn Yarborough,
Southern Living,
31 Oct. 2025
Adjective
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Every year, millions of visitors flock to Florida to set sail on a perilous voyage through pirate-laden seas as passengers on Walt Disney World’s beloved Pirates of the Caribbean ride.—
Matt Alderton,
USA Today,
31 Oct. 2025
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China's rise puts the United States in a perilous position because our biotech sector isn't just another industry.—
Sen. Todd Young,
MSNBC Newsweek,
30 Oct. 2025
Adjective
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Seven lawsuits filed this week in California allege that ordinary users seeking school help, spiritual reassurance, or simple conversation were instead drawn into psychologically damaging exchanges that ultimately preceded several suicides.—
Neetika Walter,
Interesting Engineering,
7 Nov. 2025
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Vietnam is preparing for damaging winds, flooding, heavy rain and storm surges in its central provinces including Danang, Quang Ngai and Dak Lak.—
Helen Regan,
CNN Money,
6 Nov. 2025
Adjective
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Rule out any more serious conditions.—
RikkiLynn Shields Hannigan,
Health,
25 Oct. 2025
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Springsteen has been open over the years about navigating depression, which began to get serious during his early 30s.—
Jordana Comiter,
PEOPLE,
25 Oct. 2025
Adjective
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Because obesity will drive higher blood pressure, higher blood sugar, more adverse cholesterol levels—all sorts of things—that sort of becomes a perfect storm.—
Veronique Greenwood,
Time,
6 Nov. 2025
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These weather conditions will result in elevated fire potential and a threat of adverse fire behavior.—
NC Weather Bot,
Charlotte Observer,
5 Nov. 2025
Cite this Entry
“Dangerous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/dangerous. Accessed 8 Nov. 2025.
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