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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 He was found guilty of corruption, and he should have been considered a dangerous criminal. Chicago Tribune, 17 June 2025 At times, the Algerian even operated as a wide forward as O’Neil grappled with a forward injury crisis and identified Ait-Nouri as his most dangerous attacking threat. Steve Madeley, New York Times, 6 June 2025 Furthermore, is a reliance on new safety and driver assistance features potentially dangerous? Ford recall extends to over one million vehicles due to rearview camera issue Why are over a million Ford models included in NHTSA's recent recall notices? Charles Singh, USA Today, 5 June 2025 Of all the things at risk, the loss of an objective reality is perhaps the most dangerous. Sammy Roth, Los Angeles Times, 5 June 2025 See All Example Sentences for dangerous
Recent Examples of Synonyms for dangerous
Adjective
  • What To Know There are currently no major wildfires reported in the areas, but officials warned that hazardous conditions could rapidly change this status.
    Hannah Parry, MSNBC Newsweek, 11 June 2025
  • The attempts to reach the group were not successful because of the hazardous conditions, so a boat was deployed to rescue the group, troopers said.
    Paloma Chavez, Miami Herald, 10 June 2025
Adjective
  • McFarland is facing charges of solicitation of a minor, transmission of harmful material to a minor and violation of probation.
    Devoun Cetoute, Miami Herald, 12 June 2025
  • Independent testing confirms that the supplement contains the ingredients listed on the label and is free from harmful contaminants.
    Nick Blackmer, Health, 12 June 2025
Adjective
  • Iranian Supreme Leader Ali Khamenei and military officials must know that attacking U.S. targets would be very risky and would lead to a significant response that would likely be even more damaging than Israel’s latest attacks – including putting a potential deal over its nuclear program at risk.
    Javed Ali, The Conversation, 13 June 2025
  • In a way, staying close to the game is the safest route, even if the story itself is more risky.
    James Hibberd, HollywoodReporter, 13 June 2025
Adjective
  • How detrimental and what that means for you is often difficult to know.
    Scott Gilbertson, Wired News, 16 June 2025
  • Getting rid of those numbers would be detrimental to the Celtics' success.
    Evan Massey, MSNBC Newsweek, 11 June 2025
Adjective
  • Actually using tariffs to finance a big chunk of the federal government would be a painful and perilous undertaking, budget wonks say.
    Arkansas Online, Arkansas Online, 8 June 2025
  • Yet the prevailing winds are those of geopolitical rivalry and division, turning our greatest global commons into an increasingly contested and perilous domain.
    Sturla Henriksen, Time, 5 June 2025
Adjective
  • Similarly, the recent court decisions do not change our view that the most economically damaging tariff possibilities have become less likely.
    Jeffrey Schulze, Forbes.com, 9 June 2025
  • More than 50 million people from Mississippi to western New York are under a slight risk Monday of receiving damaging wind, large-sized hail, flash flooding and a few tornadoes.
    Kenton Gewecke, ABC News, 9 June 2025
Adjective
  • According to a 2023 study on maternal health, women are still at risk for developing serious health conditions after the standard postpartum period of six to eight weeks.
    Cynthia McEwen, Forbes.com, 17 June 2025
  • Last season, especially over the latter half of the campaign following the Miller trade, Vancouver’s penalty kill morphed into a serious weapon.
    Thomas Drance, New York Times, 17 June 2025
Adjective
  • The consequences are both deeply personal and widely systemic: Women are more likely to be misdiagnosed, experience adverse drug reactions, and face delays in care.
    Geri Stengel, Forbes.com, 6 June 2025
  • Mifepristone is currently part of that program, though a wealth of research has shown that less than 0.5% of women who take it have serious adverse reactions.
    Aria Bendix, NBC news, 5 June 2025

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Cite this Entry

“Dangerous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/dangerous. Accessed 21 Jun. 2025.

More from Merriam-Webster on dangerous

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