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
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.
Recent Examples of dangerous
Some people regard weed-killers and herbicides as dangerous for consumers and the environment, an attitude lent ballast by lawsuits filed against the makers of Roundup, owned previously by Monsanto and now part of Bayer.
—
Brian Steinberg, Variety, 2 Mar. 2026
Our previous day’s flight had been cancelled because of dangerous winds.
—Burkhard Bilger, New Yorker, 2 Mar. 2026
Under his leadership, Iran expanded its influence far beyond its borders, earning a reputation as a formidable and dangerous regional power to be reckoned with.
—Abbas Al Lawati, CNN Money, 1 Mar. 2026
While many dangerous plants are unlikely to appear in a flower garden, there are some weeds that produce beautiful flowers and tempting berries that may look right at home next to your camellias, but are downright deadly.
—Melissa Locker, Southern Living, 1 Mar. 2026
See All Example Sentences for dangerous
Brian Steinberg, Variety, 2 Mar. 2026
Our previous day’s flight had been cancelled because of dangerous winds.
—Burkhard Bilger, New Yorker, 2 Mar. 2026
Under his leadership, Iran expanded its influence far beyond its borders, earning a reputation as a formidable and dangerous regional power to be reckoned with.
—Abbas Al Lawati, CNN Money, 1 Mar. 2026
While many dangerous plants are unlikely to appear in a flower garden, there are some weeds that produce beautiful flowers and tempting berries that may look right at home next to your camellias, but are downright deadly.
—Melissa Locker, Southern Living, 1 Mar. 2026
See All Example Sentences for dangerous
Recent Examples of Synonyms for dangerous
Adjective
-
The emergency declaration was first signed by county administrator and director of emergency services Kevin Mallen in response to hazardous materials and debris entering the Yuba River.—
Chaewon Chung,
Sacbee.com,
24 Feb. 2026
-
Boating conditions are poor to hazardous but are expected to improve through the day.—
Garfield Hylton,
The Orlando Sentinel,
24 Feb. 2026
Adjective
-
The analysis, which included 55 studies encompassing more than a half-million people, found that those who had a spiritual belief or religious practice were less likely to have a harmful relationship with alcohol, drugs or cigarettes.—
Jen Christensen,
CNN Money,
2 Mar. 2026
-
But after the harmful pesticide, which negatively affects reproduction rates in birds, was banned in 1972, conservation efforts have helped the peregrine falcon rebound.—
Madeline Bartos,
CBS News,
2 Mar. 2026
Adjective
-
What enables someone to engage in this type of physically risky – even life-threatening – behavior?—
Catherine A. Sanderson,
The Conversation,
3 Mar. 2026
-
Stock market volatility now makes traditional investing risky and unpredictable.—
Matt Richardson,
CBS News,
3 Mar. 2026
Adjective
-
In fact, experts say this method can have detrimental (even near-disastrous) results.—
Caroline Lubinsky,
Martha Stewart,
3 Mar. 2026
-
Experts on family homelessness have been at pains to show over the last several years that all of these circumstances, the hotels, the cars, doubled up with others, can be just as detrimental to people’s mental and physical health as being on the street.—
Max Klaver,
Miami Herald,
27 Feb. 2026
Adjective
-
The route to Crete is significantly longer and more perilous than the short trip from Turkey to nearby Greek islands.—
LEFTERIS PITARAKIS,
Arkansas Online,
1 Mar. 2026
-
The route to Crete is significantly longer and more perilous than the short trip from Turkey to nearby Greek islands.—
ABC News,
ABC News,
28 Feb. 2026
Adjective
-
Hypothesizing a possible explanation for the link between higher sugar substitute intake and accelerated cognitive decline, the researchers posited that sugar substitutes might produce toxic metabolites during digestion, which, in turn, have a damaging effect.—
Caroline Tien,
SELF,
27 Feb. 2026
-
The spray also features Oribe’s Signature Complex, a brand hallmark that includes watermelon, lychee, and edelweiss flower to defend hair from drying and damaging oxidative stress.—
Michelle Rostamian,
Allure,
27 Feb. 2026
Adjective
-
The deputy, whose name has not been released, was hospitalized with serious injuries, the sheriff's office said.—
Arkansas Online,
Arkansas Online,
27 Feb. 2026
-
This was perhaps their most worthy defensive performance of the year against a serious team.—
Bennett Durando,
Denver Post,
26 Feb. 2026
Adjective
-
The enforcement is unpredictable; a grower may be ordered to conduct a recall and pay fines for a situation that others face without penalty, even when no adverse health events are reported.—
Rino Ferrarese,
Hartford Courant,
27 Feb. 2026
-
The rehabilitation itself will be expensive, and its success will depend on wooing private investors and overcoming a half-decade of adverse publicity.—
Miami Herald Archives,
Miami Herald,
27 Feb. 2026
Cite this Entry
“Dangerous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/dangerous. Accessed 4 Mar. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
