Synonyms and Antonyms of ruinous
bringing about ruin or misfortune
- A ruinous miscalculation of the financial markets left them bankrupt.
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
causing or tending to cause destruction
- A ruinous windstorm destroyed the crops.
baleful, deadly, deathly, fatal, lethal, mortal, murderous, pestilent, poisonous, virulent, vital
deleterious, detrimental, harmful, pernicious
constructive, creative, formative, productive
harmless, innocent, innocuous, inoffensive
ameliorative, helpful, useful
healthful, healthy, nonfatal, nonlethal, salubrious, wholesome