pernicious

Main Entry:
pernicious [per-nish-uhs]
Part of Speech: adjective
Definition: bad, hurtful
Synonyms: baleful, damaging, dangerous, deadly, deleterious, destructive, detrimental, devastating, evil, fatal, harmful, iniquitous, injurious, killing, lethal, maleficent, malevolent, malicious, malign, malignant, miasmatic, miasmic, mortal, nefarious, noisome, noxious, offensive, pestiferous, pestilent, pestilential, poisonous, prejudicial, ruinous, sinister, toxic, venomous, virulent, wicked
Antonyms: helpful, innocuous, kind, lovable, loving
Main Entry: baneful
Part of Speech: adjective
Definition: ruinous, injurious
Synonyms: baleful, calamitous, deadly, deleterious, destructive, disastrous, evil, fatal, harmful, hurtful, malefic, noxious, pernicious, pestilent, pestilential, poisonous, venomous, wicked
Notes: something is baleful that intends or portends harm or injury; something is baneful that produces harm or injury - thus, a glance may be baleful, an herb or poison baneful
Antonyms: advantageous, beneficial, beneficient, fortunate, helpful, lucky
Main Entry: calamitous
Part of Speech: adjective
Definition: disastrous; tragic
Synonyms: adverse, afflictive, blighting, cataclysmic, catastrophic, deadly, deplorable, devastating, dire, fatal, grievous, harmful, heartbreaking, lamentable, messy, pernicious, regrettable, ruinous, unfavorable, unfortunate, woeful
Antonyms: blessed, comforting, favorable, fortunate, happy, joyous, wonderful
Main Entry: cruel
Part of Speech: adjective
Definition: vicious, pitiless; causing pain
Synonyms: atrocious, barbarous, bestial, bitter, bloodthirsty, brutal, brutish, callous, cold-blooded, degenerate, demoniac, depraved, evil, excruciating, ferocious, fierce, flinty, hard, hard-hearted, harsh, hateful, heartless, hellish, implacable, inexorable, inhuman, inhumane, malevolent, merciless, monstrous, painful, pernicious, poignant, rancorous, relentless, revengeful, ruthless, sadistic, sinful, spiteful, tyrannical, unfeeling, unkind, unnatural, unrelenting, vengeful, vicious, virulent, wicked
Antonyms: charitable, compassionate, considerate, feeling, gentle, kind, merciful, sympathetic, thoughtful, uncruel
Main Entry: cursed
Part of Speech: adjective
Definition: detestable, hateful
Synonyms: abominable, accursed, atrocious, damnable, devilish, disgusting, execrable, fiendish, heinous, infamous, infernal, loathsome, odious, pernicious, pestilential, vile
Antonyms: great, kind, nice, sweet
Main Entry: deadly
Part of Speech: adjective
Definition: causing end of life
Synonyms: baleful, baneful, bloodthirsty, bloody, cannibalistic, carcinogenic, cruel, dangerous, death-dealing, deathly, deleterious, destroying, destructive, fatal, grim, harmful, homicidal, injurious, internecine, killing, lethal, malignant, mortal, mortiferous, murderous, noxious, pernicious, pestiferous, pestilent, pestilential, poisonous, ruthless, savage, slaying, suicidal, toxic, unrelenting, venomous, violent, virulent
Notes: deadly means causing or capable of causing death while deathly means having the physical appearance of death
Antonyms: animating, energizing, harmless, healthful, healthy, invigorating, wholesome
Main Entry: deleterious
Part of Speech: adjective
Definition: harmful, damaging
Synonyms: bad, destroying, destructive, detrimental, hurtful, injurious, mischievous, nocent, nocuous, pernicious, prejudicial, prejudicious, ruining, ruinous
Antonyms: aiding, assisting, helpful
Main Entry: destructive
Part of Speech: adjective
Definition: injurious, devastating
Synonyms: annihilative, baleful, baneful, calamitous, cancerous, cataclysmic, catastrophic, consumptive, cutthroat, damaging, deadly, deleterious, detrimental, dire, disastrous, eradicative, evil, extirpative, fatal, fell, harmful, hurtful, internecine, lethal, lethiferous, mortal, noisome, noxious, pernicious, pestiferous, pestilential, ruinous, slaughterous, suicidal, toxic, venomous, wrackful, wreckful
Antonyms: aiding, assisting, building, creative, helpful, productive
Main Entry: detrimental
Part of Speech: adjective
Definition: damaging, disadvantageous
Synonyms: adverse, bad, baleful, deleterious, destructive, disturbing, evil, harmful, hurtful, ill, inimical, injurious, mischievous, negative, nocuous, pernicious, prejudicial, unfavorable
Antonyms: advantageous, assisting, beneficial, helpful, profitable
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