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Definition of deadly
deadlier
;deadliest
1 : likely to cause or capable of producing death deadly poison
2a : aiming to kill or destroy : implacable a deadly enemyb : highly effective a deadly exposéc : unerring a deadly marksmand : marked by determination or extreme seriousness
3a : tending to deprive of force or vitality a deadly habitb : suggestive of death especially in dullness or lack of animation deadly bores a deadly conversation
4 : very great : extreme
deadliness
nounIndulge Your Inner Word Nerd
Examples of deadly in a Sentence
the world's most deadly snake
a more deadly form of the disease
They launched a deadly attack.
Officers are allowed to use deadly force if necessary.
She shoots with deadly accuracy.
a basketball player with deadly aim
A deadly silence followed his question.
The two gang leaders are deadly enemies.
He spoke with deadly seriousness.
Recent Examples of deadly from the Web
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Dallas Cowboys linebacker Damien Wilson was arrested on two counts of aggravated assault with a deadly weapon after he was accused of backing his truck into a woman and threatening a man with a rifle during a dispute with some tailgaters.
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Dallas Cowboys linebacker Damien Wilson has been charged with two counts of aggravated assault with a deadly weapon, Frisco police said Wednesday.
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The law eliminated a citizen’s duty to retreat before using deadly force to counter an apparent threat.
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A deadly bungee jump in Spain might lead to criminal charges.
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Fewer law enforcement officers will be looking for people who have had too much alcohol over the Fourth of July weekend, known as one of the most deadly holidays, because of the state budget crisis.
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Donald Ray Shields Jr., of Lake Station, was charged with armed robbery, intimidation theft of a firearm and two counts of battery committed with a deadly weapon, all felonies, Lake County court records show.
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Such chain reactions generate intense bursts of deadly radiation, and over the last half-century have claimed nearly two dozen lives.
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Recent data from the Armed Conflict Location and Event Dataset indicates that the al-Qaida affiliate al-Shabaab overtook Boko Haram as Africa’s deadliest terror group in 2016.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'deadly'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of deadly
before 12th century
Synonym Discussion of deadly
deadly
Definition of deadly
Examples of deadly in a Sentence
I'm deadly serious about making an offer on the house.
First Known Use of deadly
before 12th century
DEADLY Defined for English Language Learners
deadly
playDefinition of deadly for English Language Learners
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: causing or able to cause death
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: extremely accurate and effective
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: extreme or complete
deadly
Definition of deadly for English Language Learners
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: extremely or completely
DEADLY Defined for Kids
Definition of deadly for Students
1 : in a way suggestive of death Her face was deadly pale.
2 : to an extreme degree deadly dull
Medical Dictionary
Law Dictionary
deadly
Legal Definition of deadly
deadlier
deadliest
: likely to cause or capable of causing death; also : dangerous 2
Additional Notes on deadly
Deadly and dangerous are sometimes used interchangeably, especially in connection with weapons or instruments.
Learn More about deadly
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See words that rhyme with deadly Thesaurus: All synonyms and antonyms for deadly Spanish Central: Translation of deadly Nglish: Translation of deadly for Spanish speakers Britannica English: Translation of deadly for Arabic speakers
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