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 Every episode of Destruction Decoded delves deep into a type of historical disaster, such as train crashes, bridge collapses, or perilous expeditions. PC Magazine, 12 Sep. 2025 His killing could become not just a tragedy but a catalyst—an event that radicalizes ever more Americans, less an aberration than a feature of our increasingly perilous national politics. Eric Cortellessa, Time, 11 Sep. 2025 The Great Lakes represents the world's largest freshwater system and are a major shipping hub, with maritime travel dating back several centuries and perilous nautical conditions marked by navigational challenges and seasonal weather. Jenna Prestininzi, Freep.com, 10 Sep. 2025 Each breakthrough spoke to what could be imagined, while also exposing how perilous progress could be. Okla Jones, Essence, 10 Sep. 2025 See All Example Sentences for perilous
Recent Examples of Synonyms for perilous
Adjective
  • Demonizing or attempting to eliminate those who think differently – literally or symbolically – has become a dangerous norm, which is all too evident in the wake of the Kirk shooting.
    Arash Javanbakht, The Conversation, 15 Sep. 2025
  • During volatile periods, this becomes especially dangerous because customer loyalty becomes more fragile and harder to rebuild.
    Talbott Roche, Forbes.com, 15 Sep. 2025
Adjective
  • Repetitive, low-skill and high-risk tasks such as patrolling remote sites or working in hazardous environments will be left in capable digital hands, reducing exposure risks and improving operational continuity.
    Freddy Kuo, Forbes.com, 19 Sep. 2025
  • Hornet’s downward slash is the primary means of parrying and lining up another attack or traversing over stretches of hazardous pits.
    Christopher Cruz, Rolling Stone, 19 Sep. 2025
Adjective
  • Instead of following that plan, Artamonov put investor money into risky short-term options, losing millions of dollars, often within days of receiving the money from investors, the indictment said.
    Dave Smith, Fortune, 19 Sep. 2025
  • The party already enjoys largely favorable maps in Maryland and Illinois, making redistricting in either state politically risky for its members and a tougher lift.
    The Hill, The Hill, 18 Sep. 2025
Adjective
  • Serving warrants requires officers to arrest a person suspected of committing a serious crime or secure crucial evidence, both situations that up the chances that a dangerous suspect might be lying in wait.
    N'dea Yancey-Bragg, USA Today, 20 Sep. 2025
  • This lightwear pair at Amazon is on sale for $12—a serious deal considering they’re polarized to ensure UV protection, feature a coating that helps protect against water on rainy days, and have a one-piece nosepad that fits snugly on your face without digging in like some of the metal varieties.
    Lane Nieset, Travel + Leisure, 20 Sep. 2025

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Cite this Entry

“Perilous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perilous. Accessed 21 Sep. 2025.

More from Merriam-Webster on perilous

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