1
as in lethal
likely to cause or capable of causing death
the doctors were alarmed about the outbreak of the deadly new virus
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Antonyms & Near Antonyms
2
as in sheer
having no exceptions or restrictions
the deadly tedium of waiting for the fog to lift
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3
as in mortal
of, relating to, or suggestive of death
a deadly pallor spread across her face as the tragic news gradually sank in
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as in extremely
to a great degree
I'm deadly serious about making an offer on the house
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Example Sentences
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Recent Examples of deadly
Brie Stimson, FOXNews.com, 13 July 2025
The flood happened early morning on July 4, when heavy rainfall caused the Guadalupe River to rise at a deadly speed.
—Emma George-Griffin, Freep.com, 12 July 2025
Christian Edwards, CNN Money, 12 June 2025
Jack’s suits were deadly serious; beyond seeing him safely through the social perils of his Princeton education, the clothes carried him into the most rarefied echelons of American and British society.
—Cree Lefavour, New York Times, 30 May 2025
See All Example Sentences for deadly
Adjective
Pneumonic plague, which affects the lungs, is the deadliest form of the disease.
—Brie Stimson, FOXNews.com, 13 July 2025
The flood happened early morning on July 4, when heavy rainfall caused the Guadalupe River to rise at a deadly speed.
—Emma George-Griffin, Freep.com, 12 July 2025
Adverb
Air India last suffered a crash this deadly in 2010, when 158 people were killed after one of its jets overshot a runway in southern India.
—Christian Edwards, CNN Money, 12 June 2025
Jack’s suits were deadly serious; beyond seeing him safely through the social perils of his Princeton education, the clothes carried him into the most rarefied echelons of American and British society.
—Cree Lefavour, New York Times, 30 May 2025
See All Example Sentences for deadly
Recent Examples of Synonyms for deadly
Adjective
-
The ruling came following a three-day hearing in which experts on both sides testified as to how Black's heart device would react under lethal injection.—
Kelly Puente,
Nashville Tennessean,
19 July 2025
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Cyanide—painful, lethal, and surprisingly quotidian—was not the only darkroom risk.—
Anika Burgess
July 17,
Literary Hub,
17 July 2025
Adjective
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The sheer number of workers who are undocumented immigrants make the effect of widespread raids more pronounced.—
Marissa Meador,
IndyStar,
21 July 2025
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In a picture at a piano, Alexa wore a pink, sheer dress that opened at her stomach, signifying that the couple was expecting a girl.—
Hannah Sacks,
People.com,
18 July 2025
Adjective
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One day, every century, Death takes on a mortal form and walks among humans, better to understand them.—
Christopher Rudolph,
People.com,
24 July 2025
-
The occupants inside all three vehicles suffered mortal injuries and died at the scene, Hebler said.—
Caleb Lunetta,
San Diego Union-Tribune,
23 July 2025
Adverb
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It’s coated in a thin layer of real gold – not just to look fancy, but because gold reflects infrared light extremely well.—
Adi Foord,
Space.com,
26 July 2025
-
The Jacksonville Jaguars made an extremely aggressive move in the 2025 NFL Draft.—
Evan Massey,
MSNBC Newsweek,
25 July 2025
Adjective
-
Priya allegedly injected her business partner with a fatal overdose of sedatives, Joseph said.—
Rhea Mogul,
CNN Money,
15 July 2025
-
Most of Red’s acquaintances are drug-addicted and on the edge of a fatal overdose; Red is essentially alone in his efforts to save himself, except for Gulbransen, who is part doctor, part social worker, part father figure, part friend.—
Joshua Rothman,
New Yorker,
14 July 2025
Adjective
-
Nonetheless, my hopeful response to my own question is that the transformed form of nature can also be the subject of humanity’s unconditional love.—
PhotoVogue,
Vogue,
10 July 2025
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The unconditional love a therapy dog provides when visiting those battling an illness can be that source of hope.—
Janice Phelan,
Kansas City Star,
9 July 2025
Adjective
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Exposure to dead animals or eating contaminated bushmeat are other risk factors, but these concerns are rare for the average tourist.—
Jasmine Laws,
MSNBC Newsweek,
24 July 2025
-
Within months, however, Carter’s financial backer Lord Carnarvon was dead from a mysterious illness.—
Justin Stebbing,
JSTOR Daily,
24 July 2025
Adverb
-
Sour Strawberry Candy Belts These sour straws are almost too chewy, but incredibly satisfying.—
Alex Beggs,
Bon Appetit Magazine,
19 July 2025
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This particular trick works incredibly well for window and standing air conditioners, since their output is already focused in a single area of the home.—
Timothy Dale,
Better Homes & Gardens,
19 July 2025
Cite this Entry
“Deadly.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/deadly. Accessed 29 Jul. 2025.
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