Deadly Definition & Meaning

deadly
adverb
  1. as if dead
  2. (used as intensives) extremely; "she was madly in love"; "deadly dull"; "deadly earnest"; "deucedly clever"; "insanely jealous"
adjective
  1. causing or capable of causing death; "a fatal accident"; "a deadly enemy"; "mortal combat"; "a mortal illness"
  2. of an instrument of certain death; "deadly poisons"; "lethal weapon"; "a lethal injection"
  3. extremely poisonous or injurious; producing venom; "venomous snakes"; "a virulent insect bite"
  4. involving loss of divine grace or spiritual death; "the seven deadly sins"
  5. exceedingly harmful
  6. (of a disease) having a rapid course and violent effect

Synonyms for deadly

baneful adj

exceedingly harmful deadly or sinister; "the Florida eagles have a fierce baleful look"

♫ Rhymes ↔ Synonyms
deathly adv

to a degree resembling death; "he was deathly pale" having the physical appearance of death

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deucedly adv

(used as intensives) extremely; "she was madly in love"; "deadly dull"; "deadly earnest"; "deucedly clever

♫ Rhymes
devilishly adv

as a devil; in an evil manner; "his writing could be diabolically satiric" in a playfully devilish manner

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fatal adj

bringing death having momentous consequences; of decisive importance

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harmful adj

causing or capable of causing harm; "too much sun is harmful to the skin"; "harmful effects of smoking"

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insanely adv

in an insane manner; "she behaved insanely"; "he behaves crazily when he is off his medication

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lethal adj

of an instrument of certain death; "deadly poisons"; "lethal weapon"; "a lethal injection"

♫ Rhymes
lifelessly adv

without animation or vitality; "lifelessly he performed the song" in a lifeless manner

♫ Rhymes
madly adv

in an uncontrolled manner; "she fought back madly" in an insane manner; "she behaved insanely

♫ Rhymes ↔ Synonyms

"Deadly" in song lyrics

See how deadly is used in real songs:

  • "I know y'all say damn I'm so calm, but I'm deadly"
    Ali Vegas — Critics
  • "Will get blown into fragments and left in debris, did he mention I'm deadly?"
    Apathy — Personal Jesus
  • "I'm ready to go to war like my group Three Deadly"
    Beelow f/ Ms. Peaches, Thug Addict

Words that rhyme with deadly

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Usage tips for "deadly"

Understanding the precise definition of a word helps you use it with confidence. When using "deadly" in your writing, consider whether you need the word itself or one of its synonyms — subtle differences in meaning can change the tone of a sentence. If you're writing poetry or song lyrics, check the rhymes for deadly to find words that pair well.

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♫ Rhymes with deadly ↔ Synonyms for deadly 🔬 Words containing deadly

Frequently asked questions

What does deadly mean?
as if dead (used as intensives) extremely; "she was madly in love"; "deadly dull"; "deadly earnest"; "deucedly clever"; "insanely jealous" causing or capable of causing death; "a fatal accident"; "a deadly enemy"; "mortal combat"; "a mortal illness" of an instrument of certain death; "deadly poisons"; "lethal weapon"; "a lethal injection" extremely poisonous or injurious; producing venom; "venomous snakes"; "a virulent insect bite" involving loss of divine grace or spiritual death
What part of speech is deadly?
Deadly is an adverb and an adjective.
How many definitions does deadly have?
Deadly has 8 definitions across 2 parts of speech (adverb, adjective).

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