Definition of dangerousnext
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Synonym Chooser

How is the word dangerous distinct from other similar adjectives?

Some common synonyms of dangerous are hazardous, perilous, precarious, and risky. While all these words mean "bringing or involving the chance of loss or injury," dangerous applies to something that may cause harm or loss unless dealt with carefully.

soldiers on a dangerous mission

When could hazardous be used to replace dangerous?

The meanings of hazardous and dangerous largely overlap; however, hazardous implies great and continuous risk of harm or failure.

claims that smoking is hazardous to your health

When can perilous be used instead of dangerous?

The synonyms perilous and dangerous are sometimes interchangeable, but perilous strongly implies the immediacy of danger.

perilous mountain roads

When might precarious be a better fit than dangerous?

In some situations, the words precarious and dangerous are roughly equivalent. However, precarious suggests both insecurity and uncertainty.

earned a precarious living by gambling

When is it sensible to use risky instead of dangerous?

The words risky and dangerous can be used in similar contexts, but risky often applies to a known and accepted danger.

shied away from risky investments

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 Slow-moving storms fueled by tropical moisture are producing dangerous rainfall rates across Central Texas, with isolated areas at risk of life-threatening flooding. Brandi D. Addison, USA Today, 15 June 2026 Flood watches for the dangerous setup have been issued for nearly 18 million people from central Texas to central Mississippi. Chris Dolce, CNN Money, 15 June 2026 The researchers say the technology could be used in self-driving cars, autonomous robots, and monitoring systems that operate in dangerous environments. Neetika Walter, Interesting Engineering, 15 June 2026 The incidents have raised questions about who is responsible for regulating companies that handle dangerous materials. Martha Bellisle, Chicago Tribune, 28 May 2026 See All Example Sentences for dangerous
Recent Examples of Synonyms for dangerous
Adjective
  • Strong longshore currents can sweep swimmers and surfers into rip currents, piers, jetties and other hazardous areas.
    NC Weather Bot, Charlotte Observer, 18 June 2026
  • The 12% concentrate is significantly more hazardous than the standard household version.
    Mike Stunson, USA Today, 17 June 2026
Adjective
  • But others say research in Australia has shown that age verification is difficult to enforce, and that a blanket ban seemed to be a snap decision that does not address a deeper problem — the way social media algorithms push harmful content to young people.
    ABC News, ABC News, 15 June 2026
  • There were also die-offs of seals, sea lions and marine birds, Leising said, probably from a combination of a lack of food and harmful algal blooms, and less food out there for baleen whales.
    Los Angeles Times, Los Angeles Times, 15 June 2026
Adjective
  • In one of them he was seen hanging from the edge of a rocky cliff using his bare hands, his legs dangling toward a steep slope in a risky performance without safety equipment.
    CNN Money, CNN Money, 16 June 2026
  • Regalado said Miami-Dade was rushing into a risky legal fight.
    Douglas Hanks June 16, Miami Herald, 16 June 2026
Adjective
  • Conferences have membership contracts, revenue leverage, championship access and conduct-detrimental authority.
    Eddie Brown, San Diego Union-Tribune, 13 June 2026
  • The reason is because time confetti can be detrimental to your mental health, physical health, as well as your relationship with your children.
    Parents, Parents, 13 June 2026
Adjective
  • Understanding the gravity of a red flag warning and adhering to these precautions is paramount in averting wildfires during these perilous conditions.
    CA Weather Bot, Sacbee.com, 19 June 2026
  • They are packed by smugglers into small and unsafe boats, with thousands dying during the perilous sea journey.
    ABC News, ABC News, 19 June 2026
Adjective
  • There is still time for boards to shape how AI is adopted before damaging practices become normalized.
    Samantha Gloede, Fortune, 19 June 2026
  • Now, researchers report that such a quake could be more widespread and damaging than previously thought.
    Kasha Patel, CNN Money, 19 June 2026
Adjective
  • My office will continue to vigorously prosecute defendants who pose serious threats to our community’s safety, especially our children.
    Michael Sinkewicz, FOXNews.com, 19 June 2026
  • In a touching tribute, Saliba ran over to the sideline after scoring and held up the jersey of Ismaël Koné, the teammate who left the field on a stretcher minutes earlier after suffering what looked to be a serious leg injury.
    Andrew Greif, NBC news, 19 June 2026
Adjective
  • If an underwriting decision goes against you, ask for the reason; New York's rule, and others like it, were written partly to force insurers to explain adverse decisions rather than shrug at them.
    Dara-Abasi Ita, Forbes.com, 20 June 2026
  • These conditions can increase your vulnerability to adverse effects from poor air quality.
    Southern California Weather Report, Daily News, 20 June 2026

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Cite this Entry

“Dangerous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/dangerous. Accessed 23 Jun. 2026.

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