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
For northern Californians, the most likely source of a dangerous quake is the Hayward-Rodgers Creek Fault, with a 33 percent chance in the next 30 years.
—
Robert Salonga, Mercury News, 22 Sep. 2025
Not a lot of people know this, but the inside of the car is more dangerous than the outside.
—John Kenney, New Yorker, 22 Sep. 2025
Not treating a fever can also be dangerous for both the fetus and the pregnant person.
—Jen Christensen, CNN Money, 22 Sep. 2025
Two other 16-year-old boys were arrested for dangerous possession of a firearm and possession of a machine gun related to the shooting.
—Jade Jackson, IndyStar, 22 Sep. 2025
See All Example Sentences for dangerous
Robert Salonga, Mercury News, 22 Sep. 2025
Not a lot of people know this, but the inside of the car is more dangerous than the outside.
—John Kenney, New Yorker, 22 Sep. 2025
Not treating a fever can also be dangerous for both the fetus and the pregnant person.
—Jen Christensen, CNN Money, 22 Sep. 2025
Two other 16-year-old boys were arrested for dangerous possession of a firearm and possession of a machine gun related to the shooting.
—Jade Jackson, IndyStar, 22 Sep. 2025
See All Example Sentences for dangerous
Recent Examples of Synonyms for dangerous
Adjective
-
Repetitive, low-skill and high-risk tasks such as patrolling remote sites or working in hazardous environments will be left in capable digital hands, reducing exposure risks and improving operational continuity.—
Freddy Kuo,
Forbes.com,
19 Sep. 2025
-
Hornet’s downward slash is the primary means of parrying and lining up another attack or traversing over stretches of hazardous pits.—
Christopher Cruz,
Rolling Stone,
19 Sep. 2025
Adjective
-
This vaporized the harmful metals in the red mud, and left behind a purified compound rich in aluminum.—
New Atlas,
New Atlas,
17 Sep. 2025
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No one has gotten sick, but lead can be harmful to young children’s development.—
DeVonne Goode,
Parents,
17 Sep. 2025
Adjective
-
Instead of following that plan, Artamonov put investor money into risky short-term options, losing millions of dollars, often within days of receiving the money from investors, the indictment said.—
Dave Smith,
Fortune,
19 Sep. 2025
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The party already enjoys largely favorable maps in Maryland and Illinois, making redistricting in either state politically risky for its members and a tougher lift.—
The Hill,
The Hill,
18 Sep. 2025
Adjective
-
Research is also abundant on the long-term detrimental impact of childhood trauma on a person’s mental and physical health through their adult life.—
Arash Javanbakht,
The Conversation,
15 Sep. 2025
-
It can be gone in the blink of an eye, so to spend it on people that aren’t fulfilling me and to spend it on work that isn’t fulfilling me, to spend it on anything that isn’t fulfilling, is detrimental to him.—
Nicole Fell,
HollywoodReporter,
15 Sep. 2025
Adjective
-
These currents vary in speed and can swiftly become perilous for anyone venturing into the surf.—
NC Weather Bot,
Charlotte Observer,
22 Sep. 2025
-
What was trendy yesterday is now perilous, or potentially so.—
Ray Mark Rinaldi,
Denver Post,
22 Sep. 2025
Adjective
-
The primary hazard with the upcoming weather will be lightning — the storms are not expected to bring damaging winds, large hail or flooding, Sheppard said.—
Kelli Arseneau,
jsonline.com,
19 Sep. 2025
-
This makes the AirLight Pro more efficient (less heat is lost to the air), less damaging (not as much heat is needed to dry your hair), and seriously speedy.—
Sophia Panych,
Allure,
16 Sep. 2025
Adjective
-
Serving warrants requires officers to arrest a person suspected of committing a serious crime or secure crucial evidence, both situations that up the chances that a dangerous suspect might be lying in wait.—
N'dea Yancey-Bragg,
USA Today,
20 Sep. 2025
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This lightwear pair at Amazon is on sale for $12—a serious deal considering they’re polarized to ensure UV protection, feature a coating that helps protect against water on rainy days, and have a one-piece nosepad that fits snugly on your face without digging in like some of the metal varieties.—
Lane Nieset,
Travel + Leisure,
20 Sep. 2025
Adjective
-
Children and those who are breastfeeding or of child-bearing age may be at higher risk for potential adverse effects.—
Karen Brewer Grossman,
Southern Living,
19 Sep. 2025
-
These interactions can alter the effectiveness of either product or other medications taken concurrently and/or increase the incidence of adverse effects.—
Pearl Pugh,
Forbes.com,
19 Sep. 2025
Cite this Entry
“Dangerous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/dangerous. Accessed 24 Sep. 2025.
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