Definition of lethalnext

Synonym Chooser

How does the adjective lethal differ from other similar words?

Some common synonyms of lethal are deadly, fatal, and mortal. While all these words mean "causing or capable of causing death," lethal applies to something that is bound to cause death or exists for the destruction of life.

lethal gas

When is deadly a more appropriate choice than lethal?

The words deadly and lethal can be used in similar contexts, but deadly applies to an established or very likely cause of death.

a deadly disease

When could fatal be used to replace lethal?

Although the words fatal and lethal have much in common, fatal stresses the inevitability of what has in fact resulted in death or destruction.

fatal consequences

When might mortal be a better fit than lethal?

While in some cases nearly identical to lethal, 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 lethal Exports of lethal weapons are now allowed under a new policy. ABC News, 29 June 2026 Over a decade, more than 1,000 people have died across the country after police subdued them through means not intended to be lethal, such as physical holds, Tasers and body blows, an investigation led by The Associated Press found. Hannah Fingerhut, Chicago Tribune, 26 June 2026 But the movie never seems to have a grip on its hero’s moral code; despite urging Ruthye not to kill the villain, Kara’s outlook on her own use of lethal force remains frustratingly vague. Siddhant Adlakha, Vulture, 26 June 2026 Immediately following Spencer's statement, the lethal drugs began flowing. Cbs Miami Team, CBS News, 25 June 2026 See All Example Sentences for lethal
Recent Examples of Synonyms for lethal
Adjective
  • At the same time, vaccination rates have declined, worrying experts that more people could become vulnerable to this potentially deadly but preventable infection.
    Faye Chiu, CNN Money, 23 June 2026
  • The suspect, who has not yet been identified by police, was arrested in connection with the deadly shooting of 22-year-old Nasir Majied on Friday, June 5.
    JT Moodee Lockman, CBS News, 23 June 2026
Adjective
  • The fatal hit-and-run occurred less than two hours after a 13-year-old boy was killed riding on the back of a moped in Queens after his friend slammed into an open car door and then careened into a moving truck.
    Colin Mixson, New York Daily News, 30 June 2026
  • The highest number of fatal attacks, the study found, occurred after high-risk behaviors, including deliberately entering waterways known to contain alligators.
    Julianna Bragg, CNN Money, 30 June 2026
Adjective
  • The cane toad, also known as the bufo toad or the marine toad, is known for the large, poisonous glands behind its eyes that secrete toxins when it’s touched.
    Amaia Gavica, Miami Herald, 23 June 2026
  • Berlin — Authorities across Germany have been battling an aggressive outbreak of poisonous caterpillars, which can cause severe health issues and have led to the closure of parks and other outdoor spaces, including in Berlin.
    Sophie Tanno, CNN Money, 23 June 2026

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Cite this Entry

“Lethal.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/lethal. Accessed 3 Jul. 2026.

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