Synonym Chooser

How is the word perilous distinct from other similar adjectives?

Some common synonyms of perilous are dangerous, hazardous, precarious, and risky. While all these words mean "bringing or involving the chance of loss or injury," perilous strongly implies the immediacy of danger.

perilous mountain roads

When might dangerous be a better fit than perilous?

The words dangerous and perilous are synonyms, but do differ in nuance. Specifically, dangerous applies to something that may cause harm or loss unless dealt with carefully.

soldiers on a dangerous mission

When is it sensible to use hazardous instead of perilous?

The synonyms hazardous and perilous are sometimes interchangeable, but hazardous implies great and continuous risk of harm or failure.

claims that smoking is hazardous to your health

When can precarious be used instead of perilous?

While in some cases nearly identical to perilous, precarious suggests both insecurity and uncertainty.

earned a precarious living by gambling

When would risky be a good substitute for perilous?

In some situations, the words risky and perilous are roughly equivalent. However, 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 perilous For foreign nationals, the deteriorating security situation made Yemen an increasingly perilous place to live and work. Rhea Mogul, CNN Money, 15 July 2025 The events of the past month have cast a perilous shadow over Iran’s Jewry, reawakening the fear that had followed Habib Elghanian’s execution and an urgency about the need to leave Iran. Roya Hakakian, The Atlantic, 10 July 2025 Directed once again by Shinsuke Sato and based on Haro Aso’s cult manga of the same name, the new season continues the story of Arisu and Usagi as they’re drawn back into the perilous limbo world known as the Borderland — a twisted realm that blurs the boundaries between life and death. Patrick Brzeski, HollywoodReporter, 7 July 2025 Finally, there has been much discussion of the impact of the BBB on the deficit and the perilous nature of America’s debt levels of about $36 Trillion Dollars. Martin Shenkman, Forbes.com, 6 July 2025 See All Example Sentences for perilous
Recent Examples of Synonyms for perilous
Adjective
  • Easter said police recently secured a court order for two vehicles – a Toyota Chaser and a Yamaha R1 – to be destroyed after they were connected to dangerous driving activities.
    Caleb Lunetta, Mercury News, 4 Aug. 2025
  • The judge found that Norma conceivably alleged that the social media companies actively directed dangerous content to Zackery based on his age and did not just serve as neutral platforms.
    Brian Brant, People.com, 4 Aug. 2025
Adjective
  • Despite receiving safety stamps of approval, the process for building the Las Vegas tunnels came under fire for worker safety violations and concerns, with the project being cited for numerous violations that included injuries and exposure to hazardous materials.
    Karoline Leonard, Austin American Statesman, 31 July 2025
  • Tyler Swardson with Greenwood Fire said their hazardous materials response team is on site to address any potential hazards.
    Jade Jackson, IndyStar, 30 July 2025
Adjective
  • But through the sheer power of mixing genes into new combinations, the risky gamble of interspecies pairings has also sometimes majorly paid off.
    Katherine J. Wu, The Atlantic, 31 July 2025
  • The National Heart, Lung, and Blood Institute (NHLBI) highlights how sleep deficiency, on the other hand, impairs these abilities and is linked to emotional issues, depression, and risky behaviors—especially in children and teens.
    Lucy Notarantonio, MSNBC Newsweek, 31 July 2025
Adjective
  • She's alleged that his former company, streaming music service Tidal, owes her serious money, and that the mogul himself is trying to hurt her career.
    Raechal Shewfelt, EW.com, 5 Aug. 2025
  • And automakers do need to make serious dents in their carbon footprints: BMW has to slash its carbon emissions from a 2019 level of 150 million tons down to 109 million tons in 2030.
    Jonathan M. Gitlin, ArsTechnica, 4 Aug. 2025

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Cite this Entry

“Perilous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perilous. Accessed 7 Aug. 2025.

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