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 But more perilous is his loss of faith in his fellow man. Ben Travers, IndieWire, 27 June 2025 The journey is a perilous and illuminating one, as Jamie and Isla encounter hordes of infected, as well as an alpha, a hulking and seemingly intelligent evolution of the infected. Randall Colburn, EW.com, 23 June 2025 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, 4 July 2025 The rap scene, then steeped in gangster culture, was perilous. Janine Rubenstein, People.com, 3 July 2025 See All Example Sentences for perilous
Recent Examples of Synonyms for perilous
Adjective
  • Other symptoms can include itching, swelling, and a throbbing pain that radiates up the affected limb, according to Cleveland Clinic. Types Of Jellyfish To Look Out For According to Coffey, the U.S. is home to more than 9,000 species of jellyfish, and only about 100 are considered dangerous.
    Meghan Overdeep, Southern Living, 11 July 2025
  • Don’t forget the sunscreen Looking toward the rest of that sun protection, a broad-spectrum, water-resistant sunscreen with an SPF of at least 30 will often be sufficient to protect your skin from dangerous UV radiation.
    Kansas City Star, Kansas City Star, 11 July 2025
Adjective
  • Fire crews sometimes allow lightning-strike fires to burn, and made the decision to do that on the Dragon Bravo Fire, intended to reduce hazardous fuels and vegetation along the North Rim of the Grand Canyon.
    Hayleigh Evans, AZCentral.com, 15 July 2025
  • Map of damage: See how the Texas floods unfolded and why Camp Mystic was in a hazardous location The death toll has risen to 129 on Saturday, including more than three dozen children.
    Kathryn Palmer, USA Today, 14 July 2025
Adjective
  • The chairman of the Texas Democratic Party had blunt words for his counterparts in Washington and elsewhere who might be urging Democrats in the Legislature to take politically risky action.
    John C. Moritz, Austin American Statesman, 18 July 2025
  • The key to any retirement investment strategy is to diversify and not place too much in any one asset class, and to rebalance to less risky assets as one nears and enters retirement.
    Suzanne Blake, MSNBC Newsweek, 18 July 2025
Adjective
  • Over time, those sketches became more serious, taking the form of tattoo designs.
    Julia Poe, Chicago Tribune, 11 July 2025
  • Simultaneously, approximately 850,000 Ozark Trail 64 oz Stainless Steel Insulated Water Bottles were pulled after reports that defective lids could forcefully eject and cause serious injuries, including permanent vision loss in two cases.
    MSNBC Newsweek, MSNBC Newsweek, 11 July 2025

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Cite this Entry

“Perilous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perilous. Accessed 25 Jul. 2025.

More from Merriam-Webster on perilous

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