adjective

calamitous

kuh-LAM-ih-tus/kəˈlæmɪtəs/

Causing or involving great disaster or distress.

The calamitous flood sweeps away homes and destroys the harvest.

A violent flood tears through a small cluster of houses: rushing water breaks through one home's wall, carries roof timbers away, and uproots a tree.
Etymology

Calamitas meant damage or misfortune; its adjective could describe something destructive or liable to disaster. The selected meaning emphasizes causing that harm. The noun's deeper origin is obscure.

In context

HISTORY28:32
a paving machine fell into the net and it carried 10 workers to their death. That's a tremendous tragedy. NARRATOR: Despite this calamitous accident
Colossal Construction of the Golden Gate Bridge | Modern Marvels (S2, E6) | Full Episode | History

More examples

  • A calamitous error left the entire archive unreadable.
  • The drought had calamitous consequences for the region.
  • Their poorly planned retreat became a calamitous defeat.

Forms

calamitous

calamity noun — An event causing great damage or distress.

Similar words

unfortunate
Can describe a minor setback, while calamitous implies severe disaster.