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
  • Prioritising one competition in favour of another is a dangerous game to play in any case when the stakes are so high.
    Mark Critchley, New York Times, 19 Apr. 2025
  • The most immediate context for this comment is presumably both the backlash to Hogwarts Legacy and the ongoing backlash over Rowling’s views writ large regarding trans women being dangerous predators.
    Aja Romano, Vox, 18 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
  • In total, 36 people were hospitalized, and 7 people developed Hemolytic uremic syndrome (HUS), a serious kidney disorder.
    Michael Dorgan, FOXNews.com, 18 Apr. 2025
  • Could this cause some serious anxiety, or even an existential crisis?
    Emily Forlini, PC Magazine, 18 Apr. 2025
Adjective
  • Concerns over substandard farmworker housing intensified after a 2023 mass shooting in Half Moon Bay drew attention to the unsafe and often overlooked living conditions of the region’s agricultural workforce.
    Ryan Macasero, Mercury News, 17 Apr. 2025
  • Dujarric said that nearly 90% of water infrastructure – including wells, pumping stations, and sewage plants – had been destroyed or damaged by hostilities, exacerbating disease risks and forcing families to rely on unsafe sources.
    Abeer Salman, CNN Money, 17 Apr. 2025

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Cite this Entry

“Hazardous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/hazardous. Accessed 2 May. 2025.

More from Merriam-Webster on hazardous

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