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
Relevance
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
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
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Recent Examples of dangerous
Of these, Coccidioides and Aspergillus are generally the most dangerous to humans.
—
Brandi D. Addison, USA Today, 30 Mar. 2026
John’s pilot license authorized him to fly at night, and flying after dark isn’t dangerous if the visibility is good.
—Jeff Wise, Vulture, 30 Mar. 2026
Chocolate products from a Californian company have been recalled after they were found to have been spiked with the potentially dangerous ingredients used in Viagra and Cialis.
—Itzel Luna, Los Angeles Times, 30 Mar. 2026
Foxtails are considered dangerous to pets because they are barbed and can penetrate a dog’s skin, ears, nose, eyes and paws and do not fall out on their own.
—Ashley MacKin Solomon, San Diego Union-Tribune, 30 Mar. 2026
See All Example Sentences for dangerous
Brandi D. Addison, USA Today, 30 Mar. 2026
John’s pilot license authorized him to fly at night, and flying after dark isn’t dangerous if the visibility is good.
—Jeff Wise, Vulture, 30 Mar. 2026
Chocolate products from a Californian company have been recalled after they were found to have been spiked with the potentially dangerous ingredients used in Viagra and Cialis.
—Itzel Luna, Los Angeles Times, 30 Mar. 2026
Foxtails are considered dangerous to pets because they are barbed and can penetrate a dog’s skin, ears, nose, eyes and paws and do not fall out on their own.
—Ashley MacKin Solomon, San Diego Union-Tribune, 30 Mar. 2026
See All Example Sentences for dangerous
Recent Examples of Synonyms for dangerous
Adjective
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The advisory warns of snow, sleet, and heavy rain, with conditions likely to make roads slippery and hazardous.—
Eric Henderson,
CBS News,
2 Apr. 2026
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Which is also super hazardous for someone in a massive suit running around [laughs].—
Brayden Garcia,
Fort Worth Star-Telegram,
1 Apr. 2026
Adjective
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The same jury acquitted Lopez of more than a dozen other charges and hung on five counts of sending harmful material to a minor.—
Teri Figueroa,
San Diego Union-Tribune,
31 Mar. 2026
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While the video amused viewers, experts warn that repeatedly hitting the snooze button can be harmful.—
Lucy Notarantonio,
MSNBC Newsweek,
31 Mar. 2026
Adjective
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Critics warn that private assets are risky, complex and opaque.—
Daniel de Visé,
USA Today,
31 Mar. 2026
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However, the approach is highly risky, requires intensive hospital care, and could risk cancer in the long term.—
Paige Bruton,
semafor.com,
30 Mar. 2026
Adjective
-
Importantly, there was no detrimental effect on strength or durability from the additives.—
Srishti Gupta,
Interesting Engineering,
31 Mar. 2026
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However, a full recovery is unlikely in the near term, meaning many detrimental impacts could persist, or even intensify, through the rest of the year.—
Daniel Manzo,
ABC News,
28 Mar. 2026
Adjective
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Secret churches, perilous conversions During the Palm Sunday service, the in-person audience at the nondenominational church was much smaller than on a typical Sunday, with only about a half-dozen members dotting the rows of blue chairs in front of the stage.—
Angie Leventis Lourgos,
Chicago Tribune,
4 Apr. 2026
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Zendaya joins the all-star cast as Greek goddess Athena, who protects Matt Damon’s Odysseus on his perilous journey back home to his family in Ithaca.—
Los Angeles Times,
Los Angeles Times,
2 Apr. 2026
Adjective
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On April 4, a cold front heading east will bring risks of hail, heavy rain and damaging winds from Texas to southwestern New York, AccuWeather reported.—
Jeanine Santucci,
USA Today,
3 Apr. 2026
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The tornadoes ranged in intensity from EF-0 to EF-3, damaging or destroying numerous homes and businesses, overturning vehicles and causing widespread power outages.—
Eric Henderson,
CBS News,
2 Apr. 2026
Adjective
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The victim suffered serious injuries to her right ear, right cheek and face, including a laceration that was about 6 inches long, officials said.—
Katie Houlis,
CBS News,
3 Apr. 2026
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The broad ban on advertising also raises serious constitutional concerns.—
Cláudia Nunes,
The Orlando Sentinel,
2 Apr. 2026
Adjective
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The most common adverse events were falls and muscle weakness, which overlap with ALS symptoms.—
Angelica Stabile,
FOXNews.com,
3 Apr. 2026
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When you're stressed or angry, your cortisol levels rise, which can have adverse effects on your heart, metabolism, and immune system.—
Sharon Basaraba,
Verywell Health,
3 Apr. 2026
Cite this Entry
“Dangerous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/dangerous. Accessed 6 Apr. 2026.
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