Synonyms and Antonyms of fatal
1
bringing about ruin or misfortune
- I made the fatal mistake of sharing my secret with the office's biggest blabbermouth
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
2
likely to cause or capable of causing death
- that snake's venom is fatal unless the victim is given the antidote almost immediately
baleful, deadly, deathly, fell, killer, lethal, mortal, murderous, pestilent, terminal, vital
baneful, deleterious, destructive, harmful, injurious, noxious, pernicious, truculent
infectious, infective, pestilential, poisonous, sublethal, toxic, virulent
dangerous, grave, grievous, hazardous, jeopardizing, menacing, parlous, perilous, risky, serious, threatening, ugly, unhealthy, unsound
bloody, internecine, sanguinary, sanguine
beneficial, restorative, salubrious, salutary
alleviative, corrective, curative, remedial, tonic
advantageous, beneficial, useful
nonpoisonous, nontoxic, safe
