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a dangerous situation
an unsafe situation
a hazardous situation
a risky situation
a scary situation
a serious situation
dangerous precedent
troublesome precedent
perilous precedent
awful precedent
unhealthy precedent
horrible precedent
dangerous levels
unhealthy levels
risky levels
toxic levels
deadly levels
hazardous levels
a dangerous enemy
a powerful enemy
a deadly enemy
a potent enemy
a wicked enemy
a threatening enemy

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 The dangerous flash flooding is forecast to be worst in Dallas, southeastern Oklahoma and eastern Arkansas. Kenton Gewecke, ABC News, 30 Apr. 2025 On April 26, flash flooding forced emergency water rescues in Duncan, Oklahoma, while dangerous flooding was reported in the cities of Norman and Moore. Jeanine Santucci, USA Today, 30 Apr. 2025 The album calls out what Young sees as dangerous overreach by corporate interests into food systems and public health. Heather Hunter, The Washington Examiner, 30 Apr. 2025 Reading back over her sister’s occasionally gossipy letters, maybe Cassie thought those qualities were just too dangerous to reveal publicly. Nina Metz, Chicago Tribune, 30 Apr. 2025 See All Example Sentences for dangerous
Recent Examples of Synonyms for dangerous
Adjective
  • And like the previous trials, the intense tests served an important purpose—in this case, making sure the shields coating LIFE habitat modules will withstand any hazardous micrometeoroid and orbital debris (MMOD) impacts.
    Andrew Paul, Popular Science, 24 Apr. 2025
  • Although with the right tools, tough jobs can be a lot easier, faster, and even less hazardous in the case of sharp tools.
    Maggie Horton, People.com, 24 Apr. 2025
Adjective
  • Confusing a congressional edict to end segregation with DEI policies that have no genesis in the Black Civil Rights movement to end Jim Crow is historically ignorant, disrespectful, and harmful to the urgent need to focus on resolving continuing racial inequalities in public education.
    Raymond Pierce, Forbes.com, 25 Apr. 2025
  • For every person who happily sets 4:00 a.m. alarms on race morning, there’s another convinced the sport is too hard, too boring, or a waste of time, if not outright harmful.
    Cindy Kuzma, SELF, 25 Apr. 2025
Adjective
  • Most cryptocurrency education is either overly basic or intended to encourage new investors to make risky trades without a clear plan.
    Kody Boye, USA Today, 26 Apr. 2025
  • This shift has become more apparent over the last two years, as some venture capital investors have moved their focus from riskier early-stage startups to later-stage companies that are more established, according to insiders.
    Ernestine Siu, CNBC, 25 Apr. 2025
Adjective
  • Focusing too much on weight rather than taking a more holistic approach can be detrimental to the care of all patients.
    Hannah Yasharoff, USA Today, 30 Apr. 2025
  • Expecting perfection, or guarding against our own humanity coming through, is also detrimental to our ability to be present for the good parts of the date.
    Myisha Battle, Time, 29 Apr. 2025
Adjective
  • But a downside surprise could be perilous considering the recent spate of bad economic news and the prevailing angst over the way President Donald Trump is implementing tariffs against U.S. trading partners.
    Jeff Cox, CNBC, 1 May 2025
  • It’s now become emblematic of the fight to protect trans women during a politically perilous time.
    Denny, Them., 30 Apr. 2025
Adjective
  • States in the Mid-Mississippi, Ohio and Tennessee valleys, stretching all the way into parts of Pennsylvania and western New York, could see thunderstorms, damaging winds, hail and a possible isolated tornado, the weather service said.
    Jeanine Santucci, USA Today, 2 May 2025
  • The trade put an end to a damaging few weeks for the team-player relationship between the Heat and Butler.
    Anthony Chiang, Miami Herald, 30 Apr. 2025
Adjective
  • But legal experts said a criminal contempt finding would be a serious step to be avoided.
    Bart Jansen, USA Today, 1 May 2025
  • The restaurant sector must get in the game in order to make a serious dent on improving customer health.
    Hank Cardello, Forbes.com, 30 Apr. 2025
Adjective
  • Sometimes this can be dangerous and cause serious adverse effects.
    Jamie Johnson, Verywell Health, 1 May 2025
  • The result is potential adverse effects on the health, cognition, and well-being of older users and missed opportunities for support.
    Diana Spehar, Forbes.com, 1 May 2025

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Cite this Entry

“Dangerous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/dangerous. Accessed 9 May. 2025.

More from Merriam-Webster on dangerous

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