Synonyms and Antonyms of calamitous
1 bringing about ruin or misfortune a calamitous decision to sell their products online exclusively ruined the business Synonyms of calamitous fatal, cataclysmal (or cataclysmic), catastrophic, damning, destructive, disastrous, fateful, ruinous, unfortunateWords Related to calamitous apocalyptic (also apocalyptical); hapless, ill-fated, ill-starred, luckless; adverse, baleful, baneful, damaging, deleterious, detrimental, evil, harmful, hurtful, ill, injurious, noxious, pernicious, prejudicialNear Antonyms of calamitous fluky (also flukey), fortuitous, fortunate, happy, lucky, providential; auspicious, bright, encouraging, fair, golden, heartening, hopeful, optimistic, promising, propitious, rose-colored, rosy, upbeat
2 causing or tending to cause destruction a calamitous flood that destroyed the town's central business district Synonyms of calamitous annihilatory, destructive, cataclysmal (or cataclysmic), devastating, devastative, disastrous, ruinousWords Related to calamitous antibiotic, biocidal; baleful, deadly, deathly, fatal, fell, killer, lethal, mortal, murderous, pestilent, poisonous, virulent, vital; deleterious, detrimental, harmful, perniciousNear Antonyms of calamitous preservative, protective; constructive, creative, formative, productive; harmless, innocent, innocuous, inoffensive; ameliorative, helpful, useful; healthful, healthy, nonfatal, nonlethal, salubrious, wholesomeAntonyms of calamitous nondestructive
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