pernicious

per·ni·cious  (pr-nshs)

adj.

1.

a. Tending to cause death or serious injury; deadly: a pernicious virus.

b. Causing great harm; destructive: pernicious rumors.

2. Archaic Evil; wicked.

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[Middle English, from Old French pernicios, from Latin pernicisus, from pernicis, destruction : per-, per- + nex, nec-, violent death; see nek-¹ in Indo-European roots.]

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per·nicious·ly adv.

per·nicious·ness n.

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pernicious [pəˈnɪʃəs]

adj

1. wicked or malicious pernicious lies

2. causing grave harm; deadly

[from Latin perniciōsus, from perniciēs ruin, from per- (intensive) + nex death]

perniciously  adv

perniciousness  n

Thesaurus

Adj.	1.	pernicious - exceedingly harmful baneful, pestilent, deadly noxious - injurious to physical or mental health; "noxious chemical wastes"; "noxious ideas"
	2.	pernicious - working or spreading in a hidden and usually injurious way; "glaucoma is an insidious disease"; "a subtle poison" insidious, subtle harmful - causing or capable of causing harm; "too much sun is harmful to the skin"; "harmful effects of smoking"

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pernicious

adjective (Formal) wicked, bad, damaging, dangerous, evil, offensive, fatal, deadly, destructive, harmful, poisonous, malicious, malign, malignant, detrimental, hurtful, malevolent, noxious, venomous, ruinous, baleful, deleterious, injurious, noisome, baneful (archaic), pestilent, maleficent the pernicious effects of alcoholism

Translations

pernicious [pɜːˈnɪʃəs]

A. ADJ

1. [idea, influence] → pernicioso
the pernicious custom of → la perniciosa or funesta costumbre de ...

2. (Med) → pernicioso

B. CPD pernicious anaemia N → anemia f perniciosa

pernicious [pə^rˈnɪʃəs] adj [influence, effect] → pernicieux/euse

pernicious

adj → schädlich; (Med) → perniziös, bösartig

pernicious [pɜːˈnɪʃəs] adj → nocivo/a, dannoso/a (Med) → pernicioso/a

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pernicious [pɜːˈnɪʃəs] adj → nocivo/a, dannoso/a (Med) → pernicioso/a