| Main Entry: | |
| 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: | 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: | 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: | direful |
| Part of Speech: | adjective |
| Definition: | fearful; horrible |
| Synonyms: | apocalyptic, appalling, awful, baleful, baneful, calamitous, dreadful, fateful, ghastly, gloomy, horrid, ill-boding, inauspicious, ominous, shocking, terrible, terrific, unlucky, unpropitious |
| Antonyms: | good, nice |
| Main Entry: | evil |
| Part of Speech: | adjective |
| Definition: | sinful, immoral |
| Synonyms: | angry, atrocious, bad, baneful, base, beastly, calamitous, corrupt, damnable, depraved, destructive, disastrous, execrable, flagitious, foul, harmful, hateful, heinous, hideous, iniquitous, injurious, loathsome, low, maleficent, malevolent, malicious, malignant, nefarious, no good, obscene, offensive, pernicious, poison, rancorous, reprobate, repugnant, repulsive, revolting, spiteful, stinking, ugly, unpleasant, unpropitious, vicious, vile, villainous, wicked, wrathful, wrong |
| Antonyms: | auspicious, decent, good, honest, moral, sinless, upright, virtuous |
| Main Entry: | fatal |
| Part of Speech: | adjective |
| Definition: | deadly, lethal |
| Synonyms: | baleful, baneful, calamitous, cataclysmic, catastrophic, deathly, destructive, disastrous, fateful, final, ill-fated, ill-starred, incurable, inevitable, killing, malefic, malignant, mortal, mortiferous, noxious, pernicious, pestilent, pestilential, poisonous, ruinous, terminal, virulent |
| Notes: | use fatal for something which has caused someone's death; use lethal for something which is capable of killing someone |
| Antonyms: | healthful, life-giving, nourishing, vital, wholesome |
| Main Entry: | harmful |
| Part of Speech: | adjective |
| Definition: | injurious, hurtful |
| Synonyms: | adverse, bad, baleful, baneful, calamitous, cataclysmic, catastrophic, consumptive, corroding, corrupting, crippling, damaging, deleterious, destructive, detrimental, dire, disadvantageous, disastrous, evil, harassing, incendiary, inimical, internecine, malefic, malicious, malignant, menacing, mischievous, murderous, nocuous, noxious, painful, pernicious, pestiferous, pestilential, risky, ruinous, sinful, sinister, subversive, toxic, undermining, unhealthy, unsafe, unwholesome, virulent |
| Main Entry: | inauspicious |
| Part of Speech: | adjective |
| Definition: | ominous, unpromising |
| Synonyms: | bad, baleful, baneful, black, dire, discouraging, evil, fateful, foreboding, ill-boding, ill-omened, impending, inopportune, sinister, threatening, unfavorable, unfortunate, unlucky, unpromising, unpropitious, untimely, untoward |
| Antonyms: | auspicious, favorable, fortunate, lucky, promising |
| Main Entry: | injurious |
| Part of Speech: | adjective |
| Definition: | hurtful |
| Synonyms: | abusive, adverse, bad, baneful, corrupting, damaging, dangerous, deadly, deleterious, destructive, detrimental, disadvantageous, evil, harmful, iniquitous, insulting, libeling, mischievous, nocent, nocuous, noxious, opprobrious, pernicious, poisonous, prejudicial, ruinous, slanderous, unconducive, unhealthy, unjust, wrongful |
| Antonyms: | aiding, assisting, beneficial, constructive, curing, fixing, good, healing, helpful, mending, nice |