DEADLY: Synonyms and Related Words. What is Another Word for DEADLY?

Need another word that means the same as “deadly”? Find 92 synonyms and 30 related words for “deadly” in this overview.

The synonyms of “Deadly” are: deathly, mortal, lethal, venomous, virulent, baneful, pernicious, pestilent, fatal, life-threatening, irreconcilable, implacable, remorseless, relentless, unrelenting, unappeasable, unforgiving, merciless, pitiless, unerring, unfailing, impeccable, perfect, flawless, faultless, assured, sure, true, precise, accurate, correct, exact, direct, intense, great, marked, extreme, excessive, immoderate, inordinate, dead, boring, dull, dull as ditchwater, dreary, uninteresting, unexciting, uneventful, uninspiring, unstimulating, humdrum, lacklustre, dry, dry as dust, arid, flat, bland, monotonous, unrelieved, lacking variety, lacking variation, tedious, tiresome, tiring, wearisome, irksome, trying, frustrating, soul-destroying, deucedly, devilishly, insanely, madly, lifelessly, extremely, exceedingly, enormously, vastly, immensely, tremendously, hugely, markedly, remarkably, abundantly, awfully, dreadfully, mightily, very, very much, most, so

Deadly as an Adjective

Definitions of "Deadly" as an adjective

According to the Oxford Dictionary of English, “deadly” as an adjective can have the following definitions:

• Exceedingly harmful.
• Causing or capable of causing death.
• Having a rapid course and violent effect.
• Very good; excellent.
• Extremely boring.
• Complete; total.
• Extremely poisonous or injurious; producing venom.
• (of a disease) having a rapid course and violent effect.
• Extremely accurate, effective, or skilful.
• Of an instrument of certain death.
• Involving loss of divine grace or spiritual death.
• Causing or able to cause death.
• Filled with hatred or intense rivalry.

Synonyms of "Deadly" as an adjective (69 Words)

accurate	Of an instrument or method capable of giving accurate information. The accounting was accurate.
arid	Lacking vitality or spirit; lifeless-C.J.Rolo. The arid plains north of Cape Town.
assured	Marked by assurance; exhibiting confidence. A tiny but assured income.
baneful	Harmful or destructive. The baneful effects of envy and jealousy.
bland	Smoothly agreeable and courteous with a degree of sophistication. A bland and unadventurous vegetarian dish.
boring	Not interesting; tedious. I ve got a boring job in an office.
correct	Correct in opinion or judgment. The correct answer.
dead	(of a colour) not glossy or bright. Crater Lake is in the crater of a dead volcano of the Cascade Range.
deathly	Relating to or causing death. His face was deathly pale.
direct	Flowing in one direction only. Direct vote.
dreary	Causing dejection. The dreary round of working eating and trying to sleep.
dry	Of noodles not served in a soup but in a sauce or with dry ingredients. Dry clothes.
dry as dust	Having a low residual sugar content because of decomposition of sugar during fermentation.
dull	Not having a sharp edge or point. He was so dull at parties.
dull as ditchwater	Being or made softer or less loud or clear.
exact	(of ideas, images, representations, expressions) characterized by perfect conformity to fact or truth; strictly correct. An exact mind.
excessive	Unrestrained, especially with regard to feelings. He was drinking excessive amounts of brandy.
extreme	Of the greatest possible degree or extent or intensity. Extreme sports like snowboarding.
fatal	Causing death. A fatal accident.
faultless	Without fault or error. Your logic is faultless.
flat	Relating to flat racing. Flat wall paint.
flawless	Without a flaw. Her smooth flawless skin.
frustrating	Preventing realization or attainment of a desire. It can be very frustrating to find that the size you want isn t there.
great	Used in names of animals or plants which are larger than similar kinds e g great tit greater celandine. Wouldn t it be great to have him back.
humdrum	Tediously repetitious or lacking in variety. A humdrum existence all work and no play.
immoderate	Not sensible or restrained; excessive. Immoderate drinking.
impeccable	In accordance with the highest standards; faultless. Speaks impeccable French.
implacable	Unable to be appeased or placated. He was an implacable enemy of Ted s.
inordinate	Beyond normal limits. The case had taken up an inordinate amount of time.
intense	Extremely sharp or intense. Intense blue.
irksome	Irritating; annoying. An irksome journey.
irreconcilable	(of people) implacably hostile to each other. These two views of the economy are irreconcilable.
lacking variation	Inadequate in amount or degree.
lacking variety	Nonexistent.
lacklustre	Lacking in vitality, force, or conviction; uninspired or uninspiring. No excuses were made for the team s lacklustre performance.
lethal	(in a sporting context) very accurate or skilful. A lethal injection.
life-threatening	Causing fear or anxiety by threatening great harm.
marked	Strongly marked easily noticeable. Walked with a marked limp.
merciless	Having or showing no mercy. Gave him a merciless beating.
monotonous	(of a sound or utterance) lacking in variation in tone or pitch. Nothing is so monotonous as the sea.
mortal	(of a battle) fought to the death. She had committed a mortal sin.
perfect	Of a tense denoting a completed action or a state or habitual action which began in the past The perfect tense is formed in English with have or has and the past participle as in they have eaten and they have been eating present perfect they had eaten past perfect and they will have eaten future perfect. A perfect stranger.
pernicious	Having a harmful effect, especially in a gradual or subtle way. The pernicious influences of the mass media.
pestilent	Likely to spread and cause an epidemic disease- Jonathan Swift. Pestilent diseases.
pitiless	(especially of weather) unrelentingly harsh or severe. A night of pitiless rain.
precise	Characterized by perfect conformity to fact or truth ; strictly correct. At that precise moment the car stopped.
relentless	Not to be placated or appeased or moved by entreaty. The relentless heat of the desert.
remorseless	Without mercy or pity. A remorseless killer.
soul-destroying	Destructive to the spirit or soul.
sure	Having or feeling no doubt or uncertainty confident and assured. She had to check her diary to be sure of the day of the week.
tedious	Too long, slow, or dull; tiresome or monotonous. Tedious days on the train.
tiresome	So lacking in interest as to cause mental weariness. Weeding is a tiresome but essential job.
tiring	Producing exhaustion. It had been a tiring day.
true	Of a compass bearing measured relative to true north. True the house faced north but you got used to that.
trying	Hard to endure. Fell upon trying times.
unappeasable	Not to be placated or appeased or moved by entreaty. Divine unappeasable justice.
unerring	Not liable to error-G.G.Coulton. An unerring sense of direction.
uneventful	Marked by no noteworthy or significant events. A place where dull people lead uneventful lives.
unexciting	Not stimulating. An unexciting novel.
unfailing	Not liable to failure. An unfailing source of good stories.
unforgiving	Not willing to forgive or excuse people’s faults or wrongdoings. He was always a proud and unforgiving man.
uninspiring	Depressing to the spirit. An uninspiring game that United scarcely deserved to win.
uninteresting	Not arousing curiosity or interest. The scenery is dull and uninteresting.
unrelenting	Harsh. The heat was unrelenting.
unrelieved	Not lessened or diminished. The burden of domestic work and childcare went largely unrelieved.
unstimulating	Not stimulating. Unstimulating conversation.
venomous	(of an animal, especially a snake) secreting venom, or capable of injecting venom by means of a bite or sting. A leading expert on venomous snakes.
virulent	Infectious; having the ability to cause disease. A virulent strain of influenza.
wearisome	So lacking in interest as to cause mental weariness. They have schedules and inventories that tell them in wearisome detail what they should look for.

Usage Examples of "Deadly" as an adjective

• Deadly poisons.
• A series of deadly attacks.
• His aim is deadly.
• My end of the theatre is deadly at the moment.
• A deadly enemy.
• It's a great town and the pubs are deadly.
• His voice was cold and deadly.
• The seven deadly sins.
• A deadly weapon.
• We are deadly enemies.
• She was in deadly earnest.

Deadly as an Adverb

Definitions of "Deadly" as an adverb

According to the Oxford Dictionary of English, “deadly” as an adverb can have the following definitions:

• In a way resembling or suggesting death; as if dead.
• Extremely (used as intensives.
• Extremely.
• As if dead.
• (used as intensives) extremely.

Synonyms of "Deadly" as an adverb (23 Words)

abundantly	Extremely. The plant grows abundantly in the wild.
awfully	Very badly or unpleasantly. We played awfully.
deathly	To an extreme degree. The night was deathly cold.
deucedly	Extremely (used as intensives. They re deucedly hard to find.
devilishly	In a devilish manner. The socialists are further handicapped if they believe that capitalists are not only wicked but also devilishly clever.
dreadfully	Very much. I ll miss you dreadfully.
enormously	Extremely. Quality of life varies enormously from one place to another.
exceedingly	Extremely. The supply multiplied exceedingly.
extremely	To an extreme degree. Extremely cold.
hugely	Very much; to a very great extent. A hugely expensive house.
immensely	To a great extent; extremely. Was immensely more important to the project as a scientist than as an administrator.
insanely	(used as intensives) extremely. I have to be up insanely early.
lifelessly	As if dead.
madly	With extreme intensity. The boys are all madly in love with you.
markedly	In a clearly noticeable manner. This advice is markedly different to that last year.
mightily	Very; to a great degree. This little town has contributed mightily to the life of the nation.
most	Almost. Most everyone understood.
remarkably	To a surprising degree. Her condition improved remarkably.
so	To the same extent used in comparisons. I love you so.
tremendously	To a very great extent. I have been helped tremendously by my family.
vastly	To an exceedingly great extent or degree. Business practices differ vastly from country to country.
very	Precisely so. The very best quality.
very much	Precisely so.

Usage Examples of "Deadly" as an adverb

• Deadly dull.
• Deadly earnest.
• Her skin was deadly pale.
• A deadly serious remark.

Associations of "Deadly" (30 Words)

antidote	A medicine taken or given to counteract a particular poison. Laughter is a good antidote to stress.
bacteria	Single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered to be.
carcinogenic	Having the potential to cause cancer.
dangerous	Likely to cause problems or to have adverse consequences. Insecticides which are dangerous to the environment.
detrimental	Causing harm or injury. Recent policies have been detrimental to the interests of many old people.
devastating	Physically or spiritually devastating often used in combination. The news came as a devastating blow.
dope	Carbonated drink flavored with extract from kola nuts dope is a southernism in the United States. Though he wasn t an intellectual giant he was no dope either.
exotoxin	A toxin that is secreted by microorganisms into the surrounding medium.
fatal	Having momentous consequences; of decisive importance- Saturday Rev. A fatal series of events.
harm	Cause or do harm to. The villains didn t harm him.
harmful	Causing or likely to cause harm. Harmful effects of smoking.
hazard	A potential source of danger. A safety hazard.
lethal	Of an instrument of certain death. A lethal cocktail of drink and pills.
mortal	A person contrasted with others regarded as being of higher status or ability. Capacities only possible of God rather than mortals.
neurotoxin	A poison which acts on the nervous system.
pernicious	Working or spreading in a hidden and usually injurious way. The pernicious influences of the mass media.
poison	Administer poison to a person or animal either deliberately or accidentally. She poisoned her husband.
poisoning	The act of giving poison to a person or animal with the intent to kill. Symptoms of poisoning may include nausea diarrhoea and vomiting.
poisonous	(of a substance or plant) causing or capable of causing death or illness if taken into the body. Poisonous chemicals.
pollutant	A substance that pollutes something, especially water or the atmosphere. Chemical pollutants.
ruinous	Disastrous or destructive. A ruinous war.
slayer	Someone who causes the death of a person or animal. A dragon slayer.
toxic	Denoting securities that are based on toxic debt and for which there is not a healthy or functioning market. Suffering from exposure to toxic substances.
toxicity	The degree to which something is poisonous. That was how I protected my partner from my family s toxicity.
toxin	A poison of plant or animal origin, especially one produced by or derived from microorganisms and acting as an antigen in the body.
vampire	(folklore) a corpse that rises at night to drink the blood of the living. The protectionist vampires in the Congress.
venom	Extreme malice and bitterness shown in someone’s attitudes, speech, or actions. His voice was full of venom.
venomous	(of an animal, especially a snake) secreting venom, or capable of injecting venom by means of a bite or sting. Venomous snakes.
virulence	The severity or harmfulness of a disease or poison. The virulence of the plague.
virulent	Harsh or corrosive in tone. A virulent insect bite.