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. Keisha Lance Bottoms:

   There is a clear distinction between what you can do and what you should do, i do not believe this was a justified use of deadly force.

2. Andrew Parker:

   The number of crude but potentially deadly plots has gone up.

3. Ofer Levy:

   To be able to vote for authorization of two vaccines that will protect children down to 6 months of age against this deadly disease is a very important thing.

4. Stephen Walls:

   Extreme heat events are deadly, and they are increasingly frequent, cooling assistance could help avoid hundreds of deaths per year.

5. 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.