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 According to a crash report from the Missouri State Highway Patrol and the Beaufort-Leslie Fire Protection District, the teen was involved in a fatal accident about 60 miles west of St. Louis. Oumou Fofana, Essence, 7 Apr. 2025 The ordeal ended with the fatal exchange of gunfire about 9:50 p.m., more than five hours after the first call to deputies. Darrell Smith, Sacbee.com, 31 Mar. 2025 That is known as meconium aspiration syndrome – a potentially fatal condition that occurs in 5% to 10% of births but is treatable if diagnosed in time. Khwaga Ghani, NPR, 31 Mar. 2025 The killing is Olathe’s second homicide of the year, according to data tracked by The Star, which includes fatal police shootings. Robert A. Cronkleton, Kansas City Star, 30 Mar. 2025 See All Example Sentences for fatal
Recent Examples of Synonyms for fatal
Adjective
  • Economists and experts in foreign policy, trade, and business are warning that this approach could be disastrous and potentially land the country in significant stagflation, in which the economy would see a major slowdown, inflation would rise, and unemployment might also head upward.
    Erik Sherman, Forbes.com, 3 Apr. 2025
  • Mannes said the compromise child care bill could have disastrous implications.
    Matthew Kelly, Kansas City Star, 3 Apr. 2025
Adjective
  • When carboxyhemoglobin saturation exceeds 50%, it is considered lethal.
    CBS News, CBS News, 3 Apr. 2025
  • Astronauts on a mission to Mars lasting several years would be exposed to potentially lethal amounts of radiation, Pitts said.
    Joshua Rhett Miller, MSNBC Newsweek, 2 Apr. 2025
Adjective
  • As fate would have it, the very destructive and deadly wildfires that swept through Los Angeles neighborhoods this year erupted as its city officials were struggling to close a large gap in their budget.
    Dan Walters, Mercury News, 1 Apr. 2025
  • However, all this rest and relaxation takes a deadly turn as a cloaked killer enters the premises.
    Rebecca Rubin, Variety, 1 Apr. 2025
Adjective
  • The self-deportation of a University of Florida student reveals the new reality for many immigrants — any brush with the law can set off a chain of unfortunate events.
    Clara-Sophia Daly, Miami Herald, 10 Apr. 2025
  • This ancestor of mine was born at a good time for ornate garments, but at an unfortunate time and place for tuberculosis.
    Denise Snodell, Kansas City Star, 9 Apr. 2025

Browse Nearby Words

Cite this Entry

“Fatal.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fatal. Accessed 15 Apr. 2025.

More from Merriam-Webster on fatal

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!