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Pernicious synonyms

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Causing or able to cause harm; hurtful
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  1. Causing or able to cause harm; hurtful
  2. Causing or capable of causing harm; injurious.
Harmful to health or well-being; injurious
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  1. Harmful to health or well-being; injurious
  2. Having a harmful effect; injurious:
  3. Harmful often in a subtle or unexpected way (as for example deleterious effects, deleterious to health).
Causing damage or harm; injurious.
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  1. Causing damage or harm; injurious.
  2. Causing detriment; harmful
Harmful to the health; injurious
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  1. Harmful to the health; injurious
  2. Harmful to living things; injurious to health:
  3. Morally injurious; corrupting; unwholesome
Portending harm; ominous.
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  1. Portending harm; ominous.
  2. Causing harm, ruin, or death; harmful.
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  1. Exhibiting prejudice or bias
  2. Causing or tending to cause harm, especially to a legal case:
  3. Causing harm or injury; detrimental, harmful or injurious
Bringing or tending to bring ruin; very destructive or harmful; disastrous
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  1. Bringing or tending to bring ruin; very destructive or harmful; disastrous
  2. Causing ruin; destructive, calamitous
  3. Causing or apt to cause ruin; destructive:
Merely negative; not helpful
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  1. Merely negative; not helpful
  2. Causing or producing destruction; destroying
  3. Tending or likely to cause destruction
Characterized by treachery or slyness; crafty; wily
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  1. Characterized by treachery or slyness; crafty; wily
  2. Working harm in a slow or subtle manner; hence, more dangerous than seems evident
  3. Beguiling but harmful; alluring:
Damaging or harmful:
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  1. Damaging or harmful:
  2. Causing hurt; specif., wounding the feelings
  3. Causing pain or suffering, especially of a psychological nature.
Causing or likely to cause death
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  1. Causing or likely to cause death
  2. Harmful, malevolent, injurious.
  3. Very harmful, dangerous, or virulent
Threatening harm, evil, or misfortune; ominous; portentous
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  1. Threatening harm, evil, or misfortune; ominous; portentous
  2. Causing or intending harm or evil; wicked:
  3. Attended by or causing misfortune or disaster:
Able to overcome the natural defenses of the host; highly infectious
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  1. Able to overcome the natural defenses of the host; highly infectious
  2. Extremely poisonous or injurious; deadly
  3. Characterized by, causing, or promoting the rapid onset of severe illness. Used of a disease or toxin.
Causing or tending to cause death:
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  1. Causing or tending to cause death:
  2. Aiming or wanting to kill; implacable:
  3. Very harmful; destructive
Deadly, causing actual or metaphorical death; causing the undoing of a claim, assertion, or legal document (“a fatal flaw in the pleading”). See also fatal defect. Deadly, causing actual or metaphorical death; causing the undoing of a claim, assertion, or legal document (“a fatal flaw in the pleading”). See also fatal defect.
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  1. Deadly, causing actual or metaphorical death; causing the undoing of a claim, assertion, or legal document (“a fatal flaw in the pleading”). See also fatal defect. Deadly, causing actual or metaphorical death; causing the undoing of a claim, assertion, or legal document (“a fatal flaw in the pleading”). See also fatal defect.
  2. Causing ruin or destruction; disastrous:
  3. Very destructive; most unfortunate; disastrous
Causing or capable of causing death; fatal or deadly
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  1. Causing or capable of causing death; fatal or deadly
  2. Extremely harmful; devastating:
Containing sufficient poison to be dangerous
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  1. Containing sufficient poison to be dangerous
  2. Capable of harming or killing by poison:
  3. Harmful or destructive:
Malicious; spiteful:
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  1. Malicious; spiteful:
  2. Full of or containing venom:
  3. Harmful or destructive:
  1. Not sound; diseased; tainted; impaired; defective.
  2. Not conducive to morality; morally harmful:
  3. Morally harmful or corrupt
Portending harm; ominous.
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  1. Portending harm; ominous.
  2. Causing distress, death, or ruin; deadly
Extremely accurate; unerring:
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  1. Extremely accurate; unerring:
  2. Absolute; utter:
  3. Aiming or wanting to kill; implacable:
Not benign; specif., cancerous
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  1. Not benign; specif., cancerous
  2. Tending to metastasize:
  3. Harmful, malevolent, injurious.
Harmful to the mind or morals; corrupting:
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  1. Harmful to the mind or morals; corrupting:
  2. Harmful to living things; injurious to health:
  3. Morally injurious; corrupting; unwholesome
Likely to cause death; deadly
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  1. Likely to cause death; deadly
  2. (Rare) Contagious; pestilential
  3. Causing or likely to cause epidemic disease:
  1. Producing pestilence or plague; pestilent
  2. Of, causing, or likely to cause pestilence or infection
  3. Pernicious; dangerous; harmful
Extremely hostile or malicious:
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  1. Extremely hostile or malicious:
  2. Characterized by, causing, or promoting the rapid onset of severe illness. Used of a disease or toxin.
  3. Extremely poisonous or injurious; deadly
Tending or likely to cause destruction
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  1. Tending or likely to cause destruction
  2. Causing or wreaking destruction; ruinous:
  3. Designed or tending to disprove or discredit:
Bringing or tending to bring ruin; very destructive or harmful; disastrous
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  1. Bringing or tending to bring ruin; very destructive or harmful; disastrous
  2. Causing or apt to cause ruin; destructive:
  3. Causing ruin; destructive, calamitous

Synonym Study

  • Detrimental implies a causing of damage, loss, or disadvantage to something specified the speech was detrimental to our cause
  • Deleterious implies slower, less irreparable injury to the health the deleterious effects of an unbalanced diet
  • Noxious refers to something that is injurious to physical or mental health noxious fumes
  • Baneful implies a harming by or as if by poisoning a baneful superstition
  • Pernicious applies to that which does great harm by insidiously undermining or weakening pernicious anemia, a pernicious dogma
Find another word for pernicious. In this page you can discover 34 synonyms, antonyms, idiomatic expressions, and related words for pernicious, like: harmful, deleterious, detrimental, noxious, baneful, damaging, prejudicial, ruinous, destructive, insidious and hurtful.