| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | detrimental, devastating |
| Synonyms: | adverse, calamitous, cataclysmal, cataclysmic, catastrophic, destructive, dire, dreadful, fatal, fateful, hapless, harmful, ill-fated, ill-starred, luckless, ruinous, terrible, tragic, unfavorable, unfortunate, unlucky, unpropitious, untoward |
| Antonyms: | blessed, fortunate, lucky, miraculous, prosperous, successful, triumphant, winning, wondrous |
| 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 |
| Antonyms: | advantageous, beneficial, beneficient, fortunate, helpful, lucky |
| Main Entry: | costly |
| Part of Speech: | adjective |
| Definition: | harmful, damaging |
| Synonyms: | catastrophic, deleterious, disastrous, loss-making, ruinous, sacrificial |
| Antonyms: | aiding, helpful |
| Main Entry: | deplorable |
| Part of Speech: | adjective |
| Definition: | unfortunate, shameful |
| Synonyms: | afflictive, awful, blameworthy, bummer, calamitous, dire, dirty, disastrous, disgraceful, dishonorable, disreputable, distressing, dolorous, downer, dreadful, execrable, faulty, godawful, grievous, grim, heartbreaking, heartrending, horrifying, intolerable, lamentable, lousy, melancholy, miserable, mournful, opprobrious, overwhelming, pitiable, poor, regrettable, reprehensible, rotten, sad, scandalous, sickening, stinking, terrible, tragic, unbearable, unsatisfactory, woeful, wretched |
| Antonyms: | cheerful, delightful, excellent, good, happy, shameless |
| 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: | dire |
| Part of Speech: | adjective |
| Definition: | terrible, ominous |
| Synonyms: | afflictive, alarming, appalling, awful, black, calamitous, cataclysmic, catastrophic, cruel, deplorable, depressing, disastrous, dismal, distressing, dreadful, fearful, fierce, frightful, gloomy, grievous, grim, heartbreaking, horrible, horrid, lamentable, oppressing, portentous, redoubtable, regrettable, ruinous, scowling, shocking, terrific, ugly, unfortunate, woeful |
| Antonyms: | fortunate, good, lucky, 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 |
| Antonyms: | healthful, life-giving, nourishing, vital, wholesome |
| Main Entry: | fateful |
| Part of Speech: | adjective |
| Definition: | deadly |
| Synonyms: | calamitous, cataclysmic, catastrophic, destructive, disastrous, fatal, lethal, mortal, ominous, ruinous |
| Antonyms: | healthful, healthy, life-giving |