pernicious

  • 1pernicious — pernicious, baneful, noxious, deleterious, detrimental are comparable when they mean exceedingly harmful but they differ as to the kind and extent of the potential for harm. Something is either pernicious or baneful which is irreparably harmful… …

    New Dictionary of Synonyms

  • 2pernicious — [pər nish′əs] adj. [Fr pernicieux < L perniciosus < pernicies, destruction < pernecare, to kill < per, thoroughly + necare, to kill: see NECRO ] 1. causing great injury, destruction, or ruin; fatal; deadly 2. Rare wicked; evil… …

    English World dictionary

  • 3Pernicious — Per*ni cious, a. [L. perniciosus, from pernicies destruction, from pernecare to kill or slay outright; per + necare to kill, slay: cf. F. pernicieux. Cf. {Nuisance}, {Necromancy}.] Having the quality of injuring or killing; destructive; very… …

    The Collaborative International Dictionary of English

  • 4Pernicious — Per*ni cious, a. [L. pernix, icis.] Quick; swift (to burn). [R.] Milton. [1913 Webster] …

    The Collaborative International Dictionary of English

  • 5pernicious — I adjective adverse, affliciting, baleful, baneful, brutal, calamitous, catastrophic, corrosive, crippling, cruel, damaging, deadly, death bringing, death dealing, deathful, deathly, deleterious, destructive, detrimental, devouring, diabolic,… …

    Law dictionary

  • 6pernicious — 1520s, from M.Fr. pernicios (13c., Fr. pernicieux), from L. perniciosus destructive, from pernicies destruction, death, ruin, from per completely + necis violent death, murder, related to necare to kill, nocere to hurt, injure, harm, noxa …

    Etymology dictionary

  • 7pernicious — [adj] bad, hurtful baleful, damaging, dangerous, deadly, deleterious, destructive, detrimental, devastating, evil, fatal, harmful, iniquitous, injurious, killing, lethal, maleficent, malevolent, malicious, malign, malignant, miasmatic, miasmic,… …

    New thesaurus

  • 8pernicious — ► ADJECTIVE ▪ having a harmful effect, especially in a gradual or subtle way. DERIVATIVES perniciously adverb perniciousness noun. ORIGIN Latin perniciosus destructive …

    English terms dictionary

  • 9pernicious — I (New American Roget s College Thesaurus) adj. malign, ruinous, poisonous, detrimental, injurious, harmful; wicked. See badness. II (Roget s IV) modif. Syn. harmful, deleterious, detrimental, noxious, baneful, damaging, prejudicial, ruinous,… …

    English dictionary for students

  • 10pernicious — adjective Etymology: Middle English, from Anglo French, from Latin perniciosus, from pernicies destruction, from per + nec , nex violent death more at noxious Date: 15th century 1. highly injurious or destructive ; deadly 2. archaic wicked •… …

    New Collegiate Dictionary

  • 11pernicious — perniciously, adv. perniciousness, n. /peuhr nish euhs/, adj. 1. causing insidious harm or ruin; ruinous; injurious; hurtful: pernicious teachings; a pernicious lie. 2. deadly; fatal: a pernicious disease. 3. Obs. evil; wicked. [1515 25; < L&#8230; …

    Universalium

  • 12pernicious — [[t]pə(r)nɪ̱ʃəs[/t]] ADJ GRADED If you describe something as pernicious, you mean that it is very harmful. [FORMAL] I did what I could, but her mother s influence was pernicious... There is a pernicious culture of excellence: everything has to be …

    English dictionary

  • 13pernicious — adjective a) Causing much harm in a subtle way. Puritanism no longer employs the thumbscrew and lash; but it still has a most pernicious hold on the minds and feelings of the American people. b) Causing death or injury; deadly. See Also:&#8230; …

    Wiktionary

  • 14pernicious — Destructive; harmful; denoting a disease of severe character and usually fatal without appropriate treatment. [L. perniciosus, destructive, fr. pernicies, destruction] * * * per·ni·cious pər nish əs adj highly injurious or destructive: tending to …

    Medical dictionary

  • 15pernicious — per|ni|cious [pəˈnıʃəs US pər ] adj formal [Date: 1500 1600; : French; Origin: pernicieux, from Latin perniciosus, from pernicies destruction , from nex violent death ] very harmful or evil, often in a way that you do not notice easily ▪ the&#8230; …

    Dictionary of contemporary English

  • 16pernicious — adjective formal very harmful or evil, often in a way that you do not notice easily: the pernicious effect of horror videos on children | a pernicious lie perniciously adverb perniciousness noun (U) …

    Longman dictionary of contemporary English

  • 17pernicious — adj. Pernicious is used with these nouns: ↑influence, ↑myth …

    Collocations dictionary

  • 18pernicious — adjective a pernicious influence on society Syn: harmful, damaging, destructive, injurious, hurtful, detrimental, deleterious, dangerous, adverse, inimical, unhealthy, unfavorable, bad, evil, baleful, wicked, malign, malevolent …

    Thesaurus of popular words

  • 19pernicious — adj. describing diseases that are highly dangerous or likely to result in death if untreated. See also: pernicious anaemia …

    The new mediacal dictionary

  • 20pernicious — per•ni•cious [[t]pərˈnɪʃ əs[/t]] adj. 1) causing insidious harm or ruin; ruinous: a pernicious lie[/ex] 2) Obs. evil; wicked • Etymology: 1515–25; &LT; L perniciōsus ruinous =pernici(ēs) ruin (per per + nici , comb. form of nex death, murder (s.&#8230; …

    From formal English to slang