Synonyms and Antonyms of disastrous
- a split-second, disastrous decision that I would forever regret
apocalyptic (also apocalyptical)
hapless, ill-fated, ill-starred, luckless
adverse, baleful, baneful, damaging, deleterious, detrimental, evil, harmful, hurtful, ill, injurious, noxious, pernicious, prejudicial
fluky (also flukey), fortuitous, fortunate, happy, lucky, providential
auspicious, bright, encouraging, fair, golden, heartening, hopeful, optimistic, promising, propitious, rose-colored, rosy, upbeat
- a disastrous fire from which the town never fully recovered