Synonym Chooser

How does the adjective fatal differ from other similar words?

Some common synonyms of fatal are deadly, lethal, and mortal. While all these words mean "causing or capable of causing death," fatal stresses the inevitability of what has in fact resulted in death or destruction.

fatal consequences

When is it sensible to use deadly instead of fatal?

While the synonyms deadly and fatal are close in meaning, deadly applies to an established or very likely cause of death.

a deadly disease

When would lethal be a good substitute for fatal?

The meanings of lethal and fatal largely overlap; however, lethal applies to something that is bound to cause death or exists for the destruction of life.

lethal gas

When might mortal be a better fit than fatal?

The synonyms mortal and fatal are sometimes interchangeable, but mortal implies that death has occurred or is inevitable.

a mortal wound

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 fatal Feral hogs can also carry diseases, such as pseudorabies, a contagious infectious disease that is fatal for dogs, as well as swine brucellosis, a bacterial infection. Saman Shafiq, USA Today, 10 Sep. 2025 After a near-fatal experience, Kaif began seeing both stories and silences differently. Kaif Shaikh, Interesting Engineering, 10 Sep. 2025 Overnight, China’s budding rights-defense movement was dealt a fatal blow — and with it, the Yangs’ case. Sheryl Estrada, Fortune, 9 Sep. 2025 The cause of the fatal crash remains unclear. Jillian Frankel, PEOPLE, 9 Sep. 2025 See All Example Sentences for fatal
Recent Examples of Synonyms for fatal
Adjective
  • The effect was disastrous, my hair crimped weirdly, with sections shooting out in different directions like the discordant notes of an orchestra tuning up.
    Rachel Kushner, New Yorker, 14 Sep. 2025
  • The mid-quarter update offered a glimmer of hope after Six Flags’ disastrous second quarter earnings report in August.
    Brady MacDonald, Oc Register, 12 Sep. 2025
Adjective
  • The most recent execution via firing squad in the United States occurred in South Carolina, where Brad Sigmon, 67, was executed in March, opting for the method instead of the electric chair or lethal injection.
    Amanda Castro Joshua Rhett Miller, MSNBC Newsweek, 12 Sep. 2025
  • While officers in the garage tried to find Cook’s firearm before approaching him, Miller from outside the front of the house gave commands to other officers to retrieve a shield and a 40mm less-lethal projectile launcher, the reports showed.
    Alex Brizee, Idaho Statesman, 11 Sep. 2025
Adjective
  • Legislators should realize that a simple law meant to avert potential catastrophic risks seems like an existential risk to those who oppose it.
    Reed Albergotti, semafor.com, 10 Sep. 2025
  • Fire is the most catastrophic event possible on a yacht, a plane, or a car.
    Rachel Ingram, Forbes.com, 10 Sep. 2025
Adjective
  • Over the past 48 hours, Nepal has been rocked by deadly mass protests led by young people who are frustrated over the country's leadership.
    Juliana Kim, NPR, 10 Sep. 2025
  • Rip currents are the deadliest of surf-zone dangers, making up the majority of deaths among beach swimmers every year, according to data from the National Oceanic and Atmospheric Administration.
    Jeanine Santucci, USA Today, 10 Sep. 2025
Adjective
  • This was the unfortunate and tragic outcome.
    Rachel Wolf, FOXNews.com, 9 Sep. 2025
  • This latest ‘oopsie’ also fits an unfortunate pattern.
    Brittany Allen, Literary Hub, 9 Sep. 2025

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Cite this Entry

“Fatal.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fatal. Accessed 17 Sep. 2025.

More from Merriam-Webster on fatal

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