cataclysmic

Main Entry:
cataclysmic [kat-uh-kliz-mik]
Part of Speech: adjective
Definition: destructive
Synonyms: calamitous, cataclysmal, catastrophal, catastrophic, disastrous, fatal, ruinous, tragic
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: disastrous
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: 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: fateful
Part of Speech: adjective
Definition: deadly
Synonyms: calamitous, cataclysmic, catastrophic, destructive, disastrous, fatal, lethal, mortal, ominous, ruinous
Antonyms: healthful, healthy, life-giving
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: ruinous
Part of Speech: adjective
Definition: disastrous, devastating
Synonyms: annihilative, baleful, baneful, calamitous, cataclysmic, catastrophic, crippling, damaging, deadly, deleterious, depleting, dire, draining, exhausting, extravagant, fatal, fateful, harmful, hurtful, immoderate, impoverishing, injurious, murderous, noxious, pernicious, shattering, suicidal, unfortunate, wasteful, withering, wrackful
Antonyms: advantageous, assisting, beneficial, helpful
Main Entry: tragic
Part of Speech: adjective
Definition: catastrophic, very bad
Synonyms: adverse, anguished, appalling, awful, calamitous, cataclysmic, crushing, deadly, deathly, deplorable, desolate, destructive, dire, disastrous, doleful, dreadful, fatal, fateful, forlorn, grievous, grim, hapless, harrowing, heart-rending, heartbreaking, ill-fated, ill-starred, lamentable, miserable, mournful, painful, pathetic, pitiable, pitiful, ruinous, sad, shocking, sorrowful, terrible, unfortunate, unhappy, woeful, wretched
Antonyms: advantageous, blessed, good, happy, successful
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