Synonym Chooser

How is the word hazardous distinct from other similar adjectives?

Some common synonyms of hazardous are dangerous, perilous, precarious, and risky. While all these words mean "bringing or involving the chance of loss or injury," hazardous implies great and continuous risk of harm or failure.

claims that smoking is hazardous to your health

When is dangerous a more appropriate choice than hazardous?

In some situations, the words dangerous and hazardous are roughly equivalent. However, dangerous applies to something that may cause harm or loss unless dealt with carefully.

soldiers on a dangerous mission

When could perilous be used to replace hazardous?

Although the words perilous and hazardous have much in common, perilous strongly implies the immediacy of danger.

perilous mountain roads

In what contexts can precarious take the place of hazardous?

While the synonyms precarious and hazardous are close in meaning, precarious suggests both insecurity and uncertainty.

earned a precarious living by gambling

Where would risky be a reasonable alternative to hazardous?

While in some cases nearly identical to hazardous, 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 hazardous Understanding the gravity of a red flag warning and adhering to these precautions is pivotal in reducing the risk of wildfires during these hazardous conditions. Ca Weather Bot, Sacbee.com, 3 July 2025 Extend some waste permits: Solid and hazardous waste permits range from three to five years in length. Karl Schneider, IndyStar, 3 July 2025 The weather service warns roads could be slick and hazardous, especially bridges and overpasses. Erin Couch, The Enquirer, 2 July 2025 Many analysts believe that robots like the K2 are likely to complement human workers by taking over monotonous or hazardous duties, which allows people to focus on more complex, creative, or supervisory tasks. Kurt Knutsson, FOXNews.com, 24 June 2025 See All Example Sentences for hazardous
Recent Examples of Synonyms for hazardous
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
  • Making Their Lives Too Easy Wealth without work creates a dangerous illusion.
    Anatoly Iofe, Forbes.com, 11 July 2025
Adjective
  • 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
Adjective
  • Much of this inventory is now sitting idle on the market, as buyers steer away from a likely risky investment.
    Giulia Carbonaro, MSNBC Newsweek, 7 July 2025
  • Voyager is a risky but fruitful investment into a huge growth market, according to many analysts, who are counting on the company’s Starlab commercial space station as the ultimate upside opportunity for the firm.
    Pia Singh, CNBC, 7 July 2025
Adjective
  • Over time, those sketches became more serious, taking the form of tattoo designs.
    Julia Poe, Chicago Tribune, 11 July 2025
  • The report cited Biden's sleep apnea treatment and stiffened gait from arthritis, but mentioned no serious ailments.
    Joey Garrison, USA Today, 11 July 2025
Adjective
  • For example, using Sentinel's canine abilities to identify any unsafe obstacles in the plant to prevent injuries.
    Jamie L. LaReau, Freep.com, 12 July 2025
  • At that time, the home was declared an unsafe structure and was set for demolition, Toussaint said.
    Miami Herald, Miami Herald, 12 July 2025

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Cite this Entry

“Hazardous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/hazardous. Accessed 18 Jul. 2025.

More from Merriam-Webster on hazardous

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