Definition for Catastrophic:

• Of a pertaining to a catastrophe.

Synonyms for Catastrophic:

• adj.

  •adverse (adjective)
  • distressful,
  • unfavorable,
  • adverse,
  • antipathetic,
  • unfortunate,
  • burdensome,
  • troublesome,
  • opposing,
  • inauspicious,
  • detrimental,
  • perilous,
  • unpropitious,
  • unfriendly,
  • miserable,
  • hard,
  • grievous,
  • untoward,
  • difficult.
  •cataclysmal (adjective)
  • catastrophal.
  •destructive (adjective)
  • damaging,
  • deadly,
  • Wreckful,
  • injurious,
  • deleterious,
  • devastating.
  •fateful (adjective)
  • hellfire.
  •harmful (adjective)
  • mischievous.

• n.

  •
  • embarrassing,
  • low-grade,
  • terrible,
  • disgraceful,
  • bad,
  • pitiful,
  • help,
  • second-rate,
  • poor.
  •
  • hazardous,
  • risky,
  • dangerous,
  • unsafe.

• Other synonyms:

  •
  • cataclysmal,
  • cataclysmic.
  •Other relevant words:
  • heartrending,
  • poisonous,
  • toxic,
  • pitiable,
  • appalling,
  • disheartening,
  • dismal,
  • tragical,
  • wasteful,
  • upsetting,
  • withering,
  • enormous,
  • morose,
  • distressing,
  • demolitionary,
  • baleful,
  • Destroying,
  • demolishing,
  • noxious,
  • ravaging,
  • nasty,
  • nihilist,
  • internecine,
  • damning,
  • Depredatory,
  • unbelievable,
  • Doomful,
  • dreadful,
  • negative,
  • nihilistic,
  • harrowing,
  • lethal,
  • disturbing,
  • unfavourable,
  • crap,
  • self-destructive,
  • suicidal,
  • disasterous,
  • tumbledown,
  • hurtful,
  • monumental,
  • violent,
  • transilient,
  • insurrectionary,
  • black,
  • radical,
  • monstrous,
  • crushing,
  • Star-crossed,
  • baneful,
  • wasting,
  • consuming,
  • Desolating,
  • piteous,
  • lamentable,
  • saddening,
  • Revulsive,
  • revolutionary,
  • funereal,
  • evil,
  • Vandalic,
  • regrettable,
  • forlorn,
  • horrifying,
  • blasting,
  • subversive,
  • heartbreaking,
  • deplorable,
  • consumptive,
  • huge,
  • ill,
  • virulent,
  • horrendous,
  • malign,
  • whopping,
  • wretched,
  • cheerless,
  • pernicious,
  • lugubrious,
  • Subversionary,
  • horrible,
  • pathetic,
  • ruining,
  • egregious,
  • melancholy,
  • sorrowful,
  • sad,
  • ill-starred,
  • dolorous,
  • unhappy,
  • Fratricidal,
  • hapless,
  • lachrymose,
  • mournful,
  • abject,
  • unforgivable,
  • malignant,
  • awful,
  • shocking,
  • sweeping,
  • vandalistic,
  • crippling,
  • depressing.

Paraphrases for Catastrophic:

• Equivalence

  • Adjective
    disastrous, calamitous, ruinous.

• Independent

  • Adjective
    dramatic, fatal, appalling, crippling, terrible, horrific, pernicious, damaging, dreadful, detrimental, horrendous, post-disaster, serious, atrocious, severe, harmful, costly, desperate, lethal, onerous, horrible, enormous, sinister, awful.

• Other Related

  • Adjective
    devastating, cataclysmic, tragic, destructive, dire, fateful, abysmal, drastic, deadly.

Antonyms for Catastrophic:

• adj.

  • destructive
    blessed, advantageous, fortunate, happy, successful.
  • Other antonyms:
    fortuitous, propitious, auspicious, bright, providential, encouraging, promising, lucky, heartening, fair, optimistic, rosy, rose-colored, hopeful, harmless, golden, upbeat, fluky.

• Other antonyms:

  • n.
    anastrophic.