calamitous

Definitions

Involving or causing great misfortune or disaster.

Catastrophic or ruinous in nature.

Examples

The company suffered a calamitous loss of revenue after the product recall.

The region is still recovering from the calamitous effects of the massive earthquake.

Synonyms

catastrophic disastrous devastating ruinous tragic cataclysmic fatal

Antonyms

fortunate beneficial advantageous auspicious favorable prosperous successful