形容詞 catastrophic:

1. extremely harmful; bringing physical or financial ruin
   同義詞：ruinous

1. A decisive or catastrophic conflict.
   決定性的或大規(guī)模的戰(zhàn)爭

cat.a.stroph.ic

adj.（形容詞）
Of, relating to, or involving a catastrophe.
大災難的：災難的、與災難有關的或卷入災難的
Involving or resulting in substantial, often ruinous medical expense:
災難性的：陷于或導致大量通常是毀滅性的醫(yī)療開銷的：
例句：
a catastrophic illness.
一場災難性的疾病

【引伸】
cat.astroph.ically
adv.（副詞）