What does deadly mean?

Definitions for deadly
ˈdɛd lidead·ly

Here are all the possible meanings and translations of the word deadly.

Princeton's WordNet

  1. deadly, deathly, mortaladjective

    causing or capable of causing death

    "a fatal accident"; "a deadly enemy"; "mortal combat"; "a mortal illness"

  2. deadly, lethaladjective

    of an instrument of certain death

    "deadly poisons"; "lethal weapon"; "a lethal injection"

  3. deadly, venomous, virulentadjective

    extremely poisonous or injurious; producing venom

    "venomous snakes"; "a virulent insect bite"

  4. deadly, mortal(a)adjective

    involving loss of divine grace or spiritual death

    "the seven deadly sins"

  5. baneful, deadly, pernicious, pestilentadjective

    exceedingly harmful

  6. deadlyadverb

    (of a disease) having a rapid course and violent effect

  7. deadly, lifelesslyadverb

    as if dead

  8. madly, insanely, deadly, deucedly, devilishlyadverb

    (used as intensives) extremely

    "she was madly in love"; "deadly dull"; "deadly earnest"; "deucedly clever"; "insanely jealous"


  1. deadlyadverb

    Fatally, mortally.

  2. deadlyadverb

    In a way which suggests death.

    Her face suddenly became deadly white.

  3. deadlyadverb


  4. deadlyadjective

    Subject to death; mortal.

  5. deadlyadjective

    Causing death; lethal.

  6. deadlyadjective

    very accurate (of aiming with a bow, firearm, etc.)

  7. deadlyadjective

    very boring

  8. deadlyadjective

    excellent, awesome, cool

  9. Etymology: deadlic (adj.), deadlice (adv.), corresponding to. Cognate with Dutch dodelijk, German tödlich.

Samuel Johnson's Dictionary

  1. Deadlyadjective

    Etymology: from dead.

    She that herself will shiver and disbranch
    From her material sap, perforce must wither,
    And come to deadly use. William Shakespeare, King Lear.

    She then on Romeo calls,
    As if that name,
    Shot from the deadly level of a gun,
    Did murther her. William Shakespeare, Romeo and Juliet.

    Dry mourning will decay more deadly bring,
    As a North wind burns a too forward Spring;
    Give sorrow vent, and let the sluices go. John Dryden, Aurengb.

    The Numidians, in number infinite, are deadly enemies unto the Turks. Richard Knolles, History of the Turks.

  2. Deadlyadverb

    Like dumb statues, or unbreathing stones,
    Star’d each on other, and look’d deadly pale. William Shakespeare, R. III.

    Young Arcite heard, and up he ran with haste,
    And ask’d him why he look’d so deadly wan. John Dryden, Fables.

    I will break Pharaoh’s arms, and he shall groan before him with the groanings of a deadly wounded man. Ez. xxx. 24.

    Mettled schoolboys set to cuff,
    Will not confess that they have done enough,
    Though deadly weary. Orrery.

    John had got an impression, that Lewis was so deadly cunning a man, that he was afraid to venture himself alone with him. John Arbuthnot, History of John Bull.

Webster Dictionary

  1. Deadlyadjective

    capable of causing death; mortal; fatal; destructive; certain or likely to cause death; as, a deadly blow or wound

  2. Deadlyadjective

    aiming or willing to destroy; implacable; desperately hostile; flagitious; as, deadly enemies

  3. Deadlyadjective

    subject to death; mortal

  4. Deadlyadverb

    in a manner resembling, or as if produced by, death

  5. Deadlyadverb

    in a manner to occasion death; mortally

  6. Deadlyadverb

    in an implacable manner; destructively

  7. Deadlyadverb



  1. Deadly

    Deadly! is a series of children's books written by Morris Gleitzman and Paul Jennings first published in 2000.

How to pronounce deadly?

How to say deadly in sign language?


  1. Chaldean Numerology

    The numerical value of deadly in Chaldean Numerology is: 9

  2. Pythagorean Numerology

    The numerical value of deadly in Pythagorean Numerology is: 6

Examples of deadly in a Sentence

  1. County District Attorney Ismael Ozanne:

    I conclude that this tragic and unfortunate death was the result of a lawful use of deadly police force and that no charges should be brought against officer Kenny.

  2. Letitia Elizabeth Landon:

    'Tis a strange mystery, the power of words! Life is in them, and death. A word can send The crimson colour hurrying to the cheek. Hurrying with many meanings; or can turn The current cold and deadly to the heart. Anger and fear are in them; grief and joy Are on their sound; yet slight, impalpable:-- A word is but a breath of passing air.

  3. Ashley Peterson:

    We do not know what has happened to the virus in the past few months, it could have mutated into something more deadly. Until we have a case, it is almost completely impossible to tell.

  4. South Carolina:

    The arrival of the SARS-CoV-2 variant in our state is an important reminder to all South Carolinians that the fight against this deadly virus is far from over.

  5. Xavier Becerra:

    The ACA has been life-changing and now through this pandemic, we can all see the value in having greater access to quality health care at affordable prices, now is not the time to rip away our best tool to address very real and very deadly health disparities in our communities.

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Translations for deadly

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