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 Allowed to crumble into disrepair by its owners, the Meruelo family, the famous hotel was ordered demolished by the city as a hazardous structure. Andres Viglucci, Miami Herald, 24 Apr. 2025 Another Easterner, John E. Fletcher, had made the hazardous trip west a couple years earlier. Matthew Wills, JSTOR Daily, 23 Apr. 2025 With reduced visibility, poor air quality and hazardous driving conditions, large-scale dust storms like this reflect ongoing challenges posed by drought and land degradation in arid regions. Ross Rosenfeld, MSNBC Newsweek, 22 Apr. 2025 It's not supposed to be interrupted by hazardous mold. Ashlyn Needham, Southern Living, 19 Apr. 2025 See All Example Sentences for hazardous
Recent Examples of Synonyms for hazardous
Adjective
  • The Jets were at their most dangerous when Vilardi could choose between Connor across the slot, Nikolaj Ehlers in the middle, or a net-front drive of his own.
    Murat Ates, New York Times, 30 Apr. 2025
  • Harvard-Westlake, last year’s Division 1 runner-up, is still dangerous with sophomore pitcher Justin Kirchner (7-0) and junior center fielder James Tronstein.
    Eric Sondheimer, Los Angeles Times, 30 Apr. 2025
Adjective
  • The original film tells the story of a perilous trip undertaken by Hikari 109, a high-speed, first-generation bullet train traveling from Tokyo to Hakata.
    Kayti Burt, Time, 23 Apr. 2025
  • Albi opened in early 2020, a perilous time for any new business to kick off.
    Melissa Kravitz Hoeffner, Forbes.com, 21 Apr. 2025
Adjective
  • Most cryptocurrency education is either overly basic or intended to encourage new investors to make risky trades without a clear plan.
    Kody Boye, USA Today, 26 Apr. 2025
  • When there’s no money for date nights, no buffer for impulse purchases and no tolerance for risky decisions, couples are forced to confront their differences face-first.
    Mark Travers, Forbes.com, 25 Apr. 2025
Adjective
  • But legal experts said a criminal contempt finding would be a serious step to be avoided.
    Bart Jansen, USA Today, 1 May 2025
  • The restaurant sector must get in the game in order to make a serious dent on improving customer health.
    Hank Cardello, Forbes.com, 30 Apr. 2025
Adjective
  • Myrtle Beach—a popular, coastal South Carolina city for snowbirds and locals alike—is firing back against a study ranking it the No. 2 most unsafe beach in the United States.
    Audrey Conklin, FOXNews.com, 2 May 2025
  • Disengaged students in unsafe schools have a higher risk of dropping out, which more than triples their likelihood of being arrested as an adult.
    Matt Robison, MSNBC Newsweek, 1 May 2025

Browse Nearby Words

Cite this Entry

“Hazardous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/hazardous. Accessed 5 May. 2025.

More from Merriam-Webster on hazardous

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!