Synonyms for Pernicious:

• adj.

  •all (adjective)
  • pernicious,
  • subtle,
  • insidious.
  •bad, hurtful (adjective)
  • offensive,
  • ruinous,
  • maleficent,
  • miasmic,
  • poisonous,
  • pestilent,
  • prejudicial,
  • mortal,
  • malevolent,
  • nefarious,
  • iniquitous,
  • dangerous,
  • killing,
  • venomous,
  • damaging,
  • wicked,
  • devastating,
  • malicious.
  •baleful (adjective)
  • fore-boding,
  • fore boding,
  • most foreboding,
  • more foreboding.
  •baneful (adjective)
  • malefic.
  •calamitous (adjective)
  • un fortunate,
  • un-fortunate,
  • un-favorable,
  • most blighting,
  • more blighting,
  • un favorable.
  •cruel (adjective)
  • most inhuman,
  • in-humane,
  • re vengeful,
  • more demoniac,
  • most brutish,
  • in human,
  • in-human,
  • painful,
  • un natural,
  • most demoniac,
  • cold blooded,
  • de-generate,
  • in exorable,
  • un-natural,
  • in humane,
  • un kindest,
  • more hard hearted,
  • un-kindest,
  • un kinder,
  • de generate,
  • most hard hearted,
  • re-vengeful,
  • more brutish,
  • un-kind,
  • most hard-hearted,
  • un-feeling,
  • un-relenting,
  • un-kinder,
  • more hard-hearted,
  • un feeling,
  • flinty,
  • hard hearted,
  • un kind,
  • monstrous,
  • un relenting,
  • in-exorable.
  •cursed (adjective)
  • dis-gusting,
  • in-famous,
  • in famous,
  • infamous,
  • heinous,
  • dis gusting.
  •deadly (adjective)
  • more slaying,
  • most death-dealing,
  • more carcinogenic,
  • most slaying,
  • more killing,
  • de-stroying,
  • most killing,
  • most deathdealing,
  • most carcinogenic,
  • murderous,
  • more death-dealing,
  • de stroying,
  • deathdealing,
  • more destroying,
  • more mortiferous,
  • most death dealing,
  • more deathdealing,
  • most mortiferous,
  • more death dealing,
  • most destroying,
  • death dealing.
  •deleterious (adjective)
  • most nocent,
  • pre judicious,
  • pre-judicial,
  • most ruining,
  • more prejudicious,
  • more nocent,
  • most prejudicious,
  • more ruining,
  • pre-judicious,
  • pre judicial.
  •destructive (adjective)
  • Extirpative,
  • Wreckful,
  • Wrackful,
  • Lethiferous,
  • feller,
  • Eradicative.
  •evil (adjective)
  • corrupting,
  • no good,
  • unpropitious.
  •fatal (adjective)
  • in curable,
  • illstarred,
  • ill-starred,
  • illfated,
  • in evitable,
  • ill starred,
  • in-evitable,
  • in-curable,
  • ill fated.
  •harmful (adjective)
  • Harassing.
  •hurtful (adjective)
  • most wounding,
  • up-setting,
  • up setting,
  • more wounding,
  • more hurting,
  • most hurting.
  •inimical (adjective)
  • unwelcoming,
  • Oppugnant,
  • inimicable,
  • ill-disposed.
  •injurious (adjective)
  • un juster,
  • more unconducive,
  • opprobrious,
  • un justest,
  • un conducive,
  • unconducive,
  • most libeling,
  • un-juster,
  • un-just,
  • un-justest,
  • most unconducive,
  • un just,
  • un-conducive,
  • more libeling.
  •insalubrious (adjective)
  • in-salubrious,
  • in salubrious.
  •lethal (adjective)
  • necrotic.
  •malevolent (adjective)
  • bad-natured.
  •malicious (adjective)
  • most uncool,
  • un-cool,
  • green eyed,
  • un cool,
  • more uncool,
  • greeneyed,
  • most cussed,
  • more cussed.
  •mephitical (adjective)
  • Mephitical.
  •mischievous (adjective)
  • most dickens,
  • most illbehaved,
  • mis behaving,
  • more ill behaved,
  • ex-asperating,
  • mis-behaving,
  • more dickens,
  • most rascally,
  • impish,
  • most ill behaved,
  • most vexing,
  • most exasperating,
  • most ill-behaved,
  • holy terror,
  • ill behaved,
  • more misbehaving,
  • more vexing,
  • most misbehaving,
  • pre carious,
  • more rascally,
  • more illbehaved,
  • ex asperating,
  • more rascal,
  • more exasperating,
  • most rascal,
  • mischievous,
  • more ill-behaved,
  • pre-carious,
  • illbehaved,
  • teasing.
  •noisome (adjective)
  • yucky,
  • Insalutary,
  • mephitic.
  •pestilent/pestilential (adjective)
  • more tainting,
  • most contaminating,
  • dis eased,
  • dis-eased,
  • most tainting,
  • more pestilent,
  • more contaminating.
  •poison/poisonous (adjective)
  • most infective,
  • more infective,
  • infective,
  • more toxiferous,
  • most miasmatic,
  • more septic,
  • most toxiferous,
  • most septic,
  • more miasmatic.
  •sinister (adjective)
  • dis-honest,
  • un-luckier,
  • more blackhearted,
  • most blackhearted,
  • dis-quieting,
  • un luckier,
  • dis honest,
  • Ill-boding,
  • dis quieting,
  • portentous,
  • illboding,
  • ill boding,
  • in auspicious,
  • most doomful,
  • un lucky,
  • un luckiest,
  • more doomful,
  • in-auspicious,
  • un-lucky.
  •unsalutary (adjective)
  • un-salutary,
  • un salutary.
  •unwholesome (adjective)
  • most unnutritious,
  • un-soundest,
  • un sounder,
  • un-cleaner,
  • un clean,
  • un-nutritious,
  • more unnutritious,
  • more pathological,
  • most pathological,
  • more contaminated,
  • un cleanest,
  • un cleaner,
  • un nutritious,
  • un-cleanest,
  • un-sounder,
  • un-sound,
  • un wholesome,
  • un sound,
  • un-wholesome.

• n.

  •
  • hazardous,
  • unsafe,
  • perilous,
  • risky,
  • disastrous.
  •
  • malignant,
  • help.

• Other synonyms:

  •
  • Poisoned.
  •Other relevant words:
  • polluted,
  • iii,
  • bitter,
  • destroyer,
  • brutally,
  • grievance,
  • life-threatening,
  • disadvantageous,
  • damnable,
  • catastrophic,
  • adverse,
  • counter-productive,
  • bad,
  • sickening,
  • odious,
  • impairment,
  • distressful,
  • badly,
  • elusive,
  • debased,
  • terrible,
  • repulsive,
  • criminally,
  • corruption,
  • unhygienic,
  • despicable,
  • dreadful,
  • degeneracy,
  • deathly,
  • sneaky,
  • counterproductive,
  • harmfulness,
  • ill,
  • sinfulness,
  • perniciousness,
  • unhealthy,
  • Sinisterly,
  • hateful,
  • Scathful,
  • roguishly,
  • iniquity,
  • internecine,
  • execrable,
  • spiteful,
  • not good,
  • corrosive,
  • sin,
  • maliciously,
  • savage,
  • disservice,
  • abominable,
  • disastrously,
  • wound,
  • abhorrent,
  • viciously,
  • obnoxiously,
  • Nocuous,
  • infernal,
  • cataclysmic,
  • invidious,
  • dead,
  • harm,
  • illy,
  • murderer,
  • unhappily,
  • disadvantageously,
  • furtive,
  • injustice,
  • fell,
  • diabolic,
  • veneniferous,
  • nasty,
  • unhealthful,
  • blacken,
  • crippling,
  • inauspiciously,
  • atrocious,
  • severely,
  • adversely,
  • hideous,
  • wrongly,
  • awful,
  • vitiated,
  • mischievousness,
  • prejudicially,
  • base,
  • unpleasantly,
  • depravity,
  • repugnant,
  • detrimentally,
  • injuriousness,
  • unrighteous,
  • calamitously,
  • poorly,
  • tumbledown,
  • venenous,
  • meanly,
  • disadvantage,
  • inadequately,
  • rotten,
  • disgusting,
  • offensively,
  • venomously,
  • swart,
  • foul,
  • sinfully,
  • damagingly,
  • detriment,
  • hurtfulness,
  • outrageous,
  • injuriously,
  • suicidal,
  • mischief,
  • unfortunately,
  • underhand,
  • wickedness,
  • distressing,
  • mischievously,
  • wickedly,
  • dire,
  • corroding,
  • feral,
  • villainous,
  • sadly,
  • evilly,
  • Malignly,
  • unfavourable,
  • horrid,
  • brutal,
  • corruptive,
  • unluckily,
  • awfully,
  • Assassin,
  • Scatheful,
  • sinful,
  • injury,
  • deleteriously,
  • repellent,
  • mischief-making,
  • hurtfully,
  • misbegotten,
  • distastefully,
  • balefully,
  • loathsome,
  • malignancy,
  • ominously,
  • tragic,
  • naughtily,
  • threateningly,
  • killer,
  • ominous,
  • unwholesome,
  • vile,
  • treacherous,
  • spitefully,
  • inconveniently,
  • horrible,
  • damage,
  • accursed,
  • bruise,
  • harmfully,
  • revolting,
  • detestable,
  • Venenate,
  • painfully,
  • vicious,
  • nauseous,
  • perniciously,
  • guiltily,
  • vice,
  • Disserviceable,
  • balefulness,
  • nastily,
  • poisonously,
  • Deathful,
  • dreadfully.

Paraphrases for Pernicious:

• Equivalence

  • Adjective
    deleterious, noxious.

• Independent

  • Adjective
    insidious, wicked, malicious, fatal, counterproductive, nefarious, hazardous, catastrophic, ruinous, heinous, malign, prejudicial, perverted, dire, perilous, deadly, inclement, unhealthy, ominous, lethal, egregious, disadvantageous, bad, horrendous, fateful, sinister, warped, abominable, disruptive, unfortunate, dreadful, crippling, odious, reprehensible, virulent, unfavourable, ill, unholy, unsound, kinky, ill-fated, obnoxious.

• Other Related

  • Adjective
    perverse, disastrous, detrimental, destructive, adverse, devastating, dangerous, calamitous, poisonous, malignant, vicious, undesirable, evil, negative.

Antonyms for Pernicious:

• adj.

  • bad, hurtful
    kind, good, advantageous, lovable, helpful, beneficial, harmless, wholesome, nonpoisonous, Assisting, healthy, innocuous, loving, benevolent.
  • Other antonyms:
    remedial, benignant, inoffensive, favorable, nonfatal, profitable, salubrious, nonpolluting, nonlethal, secure, nondestructive, safe, salutary, nonvenomous, healthful, anodyne, useful, rejuvenating, serviceable, innocent, life-giving, invigorating, palliative, curative, noninfectious, Hurtless, beneficent, noncorrosive, nontoxic, propitious, sound.