Synonyms for deadly
ˈdɛd lidead·ly

English Synonyms and AntonymsRate these synonyms:0.0 / 0 votes

1. deadly

   Pernicious (Latin per, through, and neco, kill) signifies having the power of destroying or injuring, tending to hurt or kill. Pernicious is stronger than injurious; that which is injurious is capable of doing harm; that which is pernicious is likely to be destructive. Noxious (Latin noceo, hurt) is a stronger word than noisome, as referring to that which is injurious or destructive. Noisome now always denotes that which is extremely disagreeable or disgusting, especially to the sense of smell; as, the noisome stench proclaimed the presence of noxious gases.

   Synonyms:
   bad, baneful, deleterious, destructive, detrimental, evil, foul, harmful, hurtful, injurious, insalubrious, mischievous, noisome, noxious, pernicious, perverting, pestiferous, pestilential, poisonous, ruinous, unhealthful, unwholesome

   Antonyms:
   advantageous, beneficent, beneficial, favorable, good, healthful, helpful, invigorating, life-giving, profitable, rejuvenating, salutary, serviceable, useful, wholesome

Complete Dictionary of Synonyms and AntonymsRate these synonyms:0.0 / 0 votes

1. deadly

   Synonyms:
   mortal, fatal, malignant, baleful, pernicious, noxious, venomous, destructive, baneful, implacable

   Antonyms:
   vital, life-giving, healthful, wholesome, nutritious

Princeton's WordNetRate these synonyms:1.0 / 2 votes

1. deadly, deathly, mortaladjective

   causing or capable of causing death

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

   Synonyms:
   mortal, deathly, baneful, venomous, pestilent, lethal, virulent, deathlike, pernicious, mortal(a)

   Antonyms:
   pardonable, innocuous, nontoxic, nonfatal, avirulent, atoxic

2. deadly, lethaladjective

   of an instrument of certain death

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

   Synonyms:
   mortal, deathly, baneful, venomous, pestilent, lethal, virulent, pernicious, mortal(a)

   Antonyms:
   innocuous, nonfatal, avirulent, atoxic, pardonable, nontoxic

3. deadly, venomous, virulentadjective

   extremely poisonous or injurious; producing venom

   "venomous snakes"; "a virulent insect bite"

   Synonyms:
   virulent, blistering, pestilent, mortal(a), pernicious, sulfurous, mortal, baneful, acerbic, venomous, sulphurous, caustic, deathly, lethal, acrid, poisonous, vicious, acid, vitriolic, bitter, acerb

   Antonyms:
   innocuous, nontoxic, nonfatal, avirulent, pardonable, atoxic

4. deadly, mortal(a)adjective

   involving loss of divine grace or spiritual death

   "the seven deadly sins"

   Antonyms:
   nonfatal, innocuous, atoxic, pardonable, nontoxic, avirulent

5. baneful, deadly, pernicious, pestilentadjective

   exceedingly harmful

   Synonyms:
   pernicious, pestiferous, deathly, virulent, baneful, venomous, baleful, mortal, insidious, lethal, pestilent, plaguey, subtle, pestilential, mortal(a)

   Antonyms:
   pardonable, nonfatal, atoxic, avirulent, nontoxic, innocuous

6. deadlyadverb

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

   Synonyms:
   mortal, deathly, baneful, venomous, pestilent, lethal, virulent, pernicious, mortal(a)

   Antonyms:
   innocuous, avirulent, nonfatal, pardonable, atoxic, nontoxic

7. deadly, lifelesslyadverb

   as if dead

   Synonyms:
   lifelessly, madly, devilishly, insanely, deucedly

   Antonyms:
   pardonable, atoxic, avirulent, nontoxic, nonfatal, innocuous

8. madly, insanely, deadly, deucedly, devilishlyadverb

   (used as intensives) extremely

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

   Synonyms:
   lifelessly, devilishly, fiendishly, dementedly, insanely, diabolically, madly, deucedly, devilish, crazily, frantically

   Antonyms:
   avirulent, nonfatal, pardonable, innocuous, nontoxic, atoxic

Dictionary of English SynonymesRate these synonyms:0.0 / 0 votes

1. deadlyadjective

   Synonyms:
   mortal, fatal, destructive, deleterious, noxious, murderous

2. deadlyadjective

   Synonyms:
   implacable, rancorous, sanguinary

Synonyms, Antonyms & Associated WordsRate these synonyms:0.0 / 0 votes

1. deadlyadjective

   Synonyms:
   fatal, mortal, lethal, lethiferous, noxious, internecine, implacable, unrelenting

PPDB, the paraphrase databaseRate these paraphrases:4.0 / 1 vote

1. List of paraphrases for "deadly":

   lethal, fatal, mortal, murderous, bloody, killer, life-threatening, murderer, fatally, homicidal

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How to use deadly in a sentence?

1. Darcel Clark:

   The defendant allegedly brought these semi-automatic weapons and high-capacity magazines up from the south, sometimes transporting them in a duffle bag by bus. Dozens of the firearms were loaded and four are considered assault weapons. The NYPD worked diligently to intercept these deadly weapons before they hit our streets, bronxites are dying from gunfire and we can not tolerate one more illegal gun in our community.

2. Cynthia Young:

   The images of dead soldiers, a farmer burying a dead horse in the snow and German prisoners corralled with their hands raised attest to the bleakness of this deadly campaign.

3. Tiffany Muller:

   These corporations' announcements are nothing more than a PR stunt -- and a bad one at that, there's only one party -- and specifically 147 members of Congress -- who incited the violent and deadly assault on our Capitol.

4. Charles de LEUSSE:

   If Cupidon your heart miss, deadly your body is. (Si cupidon rate le coeur, Il touche mortellement le corps)

5. Ina Park:

   If you see it and you do nothing about it, it just goes away. And then you get the rash. And then if you ignore the rash, it also goes away, they just disappear and then you can just talk yourself out of the fact that you have this potentially deadly disease.