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, deadly, 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, deadly, 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, deadly, 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, deadly, 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, deadly

   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, deadly, 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. Bill Gates on Monday:

   Britain is a global leader in the fight against deadly diseases like malaria - a disease that still claims the life of a child every minute.

2. Steven Mosher:

   China has set up a deadly demographic trap for itself, condemning itself to low or no growth for years to come, regardless of how many babies they can, using persuasion or compulsion, get young women to bear.

3. Rudyard Kipling:

   The female of the species is more deadly than the male.

4. Mohammad Javad Zarif:

   We first have to remove our foreign policy from the issue of party and factional fighting, the deadly poison for foreign policy is for foreign policy to become an issue of party and factional fighting.

5. President Obama:

   We also know that when people are armed with powerful weapons, unfortunately it makes attacks like these more deadly and more tragic, and in the days ahead we’re going to have to consider those realities as well.