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. Khehla John Sitole:

   I am certain that the speedy response by the joint security forces has averted what could have been a more severe blood bath, it is rather unfortunate that such an incident takes place during a time when South Africa is being plagued by a deadly virus and violent crimes.

2. Thomas Kelly:

   The use of deadly force here was necessitated by the actions of the driver of the vehicle.

3. Merrick Garland:

   Almost a century ago, Congress determined that short-barreled rifles must be subject to stricter legal requirements, policy makers understood then what we know is still true today. Short-barreled rifles present a deadly combination: They are easier to conceal than rifles, but they are more powerful and lethal than pistols.

4. Donald Trump:

   We're gathered tonight to discuss what we must do to stop the deadly wave of lawlessness and chaos that has been sweeping across our land like we've never seen before, the rule of law has been collapsing before our very eyes under the weak on crime policies of the Biden administration, the Pelosi-Schumer Congress, radical left Democrats at the state and local level.

5. R. A. Salvatore, The Crystal Shard:

   The meekest of animals will fight bravely when it is backed against a wall, for it has nothing left to lose. A poor man is more deadly than a rich man because he puts less value on his own life.