What are some alternative words for deadly?

Synonyms for deadly
ˈdɛd li

This thesaurus page is about all possible synonyms, equivalent, same meaning and similar words for the term deadly.

Princeton's WordNet

  1. deadly, deathly, mortal(adj)

    causing or capable of causing death

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

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

    pardonable, innocuous, nontoxic, nonfatal, avirulent, atoxic

  2. deadly, lethal(adj)

    of an instrument of certain death

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

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

    innocuous, nonfatal, avirulent, atoxic, pardonable, nontoxic

  3. deadly, venomous, virulent(adj)

    extremely poisonous or injurious; producing venom

    "venomous snakes"; "a virulent insect bite"

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

    innocuous, nontoxic, nonfatal, avirulent, pardonable, atoxic

  4. deadly, mortal(a)(adj)

    involving loss of divine grace or spiritual death

    "the seven deadly sins"

    nonfatal, innocuous, atoxic, pardonable, nontoxic, avirulent

  5. baneful, deadly, pernicious, pestilent(adj)

    exceedingly harmful

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

    pardonable, nonfatal, atoxic, avirulent, nontoxic, innocuous

  6. deadly(adverb)

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

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

    innocuous, avirulent, nonfatal, pardonable, atoxic, nontoxic

  7. deadly, lifelessly(adverb)

    as if dead

    lifelessly, madly, devilishly, insanely, deucedly

    pardonable, atoxic, avirulent, nontoxic, nonfatal, innocuous

  8. madly, insanely, deadly, deucedly, devilishly(adverb)

    (used as intensives) extremely

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

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

    avirulent, nonfatal, pardonable, innocuous, nontoxic, atoxic

English Synonyms and Antonyms

  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.

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

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

Complete Dictionary of Synonyms and Antonyms

  1. deadly

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

    vital, life-giving, healthful, wholesome, nutritious

Dictionary of English Synonymes

  1. deadly(a.)

    mortal, fatal, destructive, deleterious, noxious, murderous

  2. deadly(a.)

    implacable, rancorous, sanguinary

Synonyms, Antonyms & Associated Words

  1. deadly(a)

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

PPDB, the paraphrase database

  1. List of paraphrases:

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

How to pronounce deadly?

US English

How to say deadly in sign language?

  1. deadly

Words popularity by usage frequency


How to use deadly in a sentence?

  1. Kristan Hawkins:

    Handing out deadly drugs through United States is a disaster waiting to happen, risking women's lives to make a political point and a quick profit makes no sense, and we sadly anticipate horror stories when inevitably something goes wrong.

  2. United States:

    Fentanyl disguised as a genuine pharmaceutical is a killer -- which is being proven every single day in the United States, we are aggressively targeting drug dealers responsible for trafficking illicit fentanyl, which has become the most deadly facet of the opioid epidemic. We are committed to slowing the number of overdose deaths and prosecuting those responsible for spreading this most dangerous opioid.

  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. Cuyahoga County Prosecutor Timothy McGinty:

    The death of a citizen resulting from the use of deadly force by the police is different from all other cases and deserves a high level of public scrutiny.

  5. New York:

    The death toll is higher than the peak yearly death totals from HIV, car crashes, or gun deaths, analysts pointed to two major reasons for the increase: A growing number of Americans are using opioids, and drugs are becoming more deadly ….

Translations for deadly

From our Multilingual Translation Dictionary

Get even more translations for deadly »


Find a translation for the deadly synonym in other languages:

Select another language:

  • - Select -
  • 简体中文 (Chinese - Simplified)
  • 繁體中文 (Chinese - Traditional)
  • Español (Spanish)
  • Esperanto (Esperanto)
  • 日本語 (Japanese)
  • Português (Portuguese)
  • Deutsch (German)
  • العربية (Arabic)
  • Français (French)
  • Русский (Russian)
  • ಕನ್ನಡ (Kannada)
  • 한국어 (Korean)
  • עברית (Hebrew)
  • Українська (Ukrainian)
  • اردو (Urdu)
  • Magyar (Hungarian)
  • मानक हिन्दी (Hindi)
  • Indonesia (Indonesian)
  • Italiano (Italian)
  • தமிழ் (Tamil)
  • Türkçe (Turkish)
  • తెలుగు (Telugu)
  • ภาษาไทย (Thai)
  • Tiếng Việt (Vietnamese)
  • Čeština (Czech)
  • Polski (Polish)
  • Bahasa Indonesia (Indonesian)
  • Românește (Romanian)
  • Nederlands (Dutch)
  • Ελληνικά (Greek)
  • Latinum (Latin)
  • Svenska (Swedish)
  • Dansk (Danish)
  • Suomi (Finnish)
  • فارسی (Persian)
  • ייִדיש (Yiddish)
  • հայերեն (Armenian)
  • Norsk (Norwegian)
  • English (English)

Images & Illustrations of deadly

  1. deadly

Discuss these deadly synonyms with the community:


Use the citation below to add these synonyms to your bibliography:


"deadly." Synonyms.com. STANDS4 LLC, 2020. Web. 9 Jul 2020. <https://www.synonyms.com/synonym/deadly>.

Are we missing a good synonym for deadly?

Free, no signup required:

Add to Chrome

Get instant synonyms for any word that hits you anywhere on the web!

Free, no signup required:

Add to Firefox

Get instant synonyms for any word that hits you anywhere on the web!

Nearby & related entries:

Alternative searches for deadly:

Thanks for your vote! We truly appreciate your support.