Désastreux.
ETYM Latin Calamitosus; cf. French calamiteux.
1. Suffering calamity; wretched; miserable.
2. Producing, or attended with distress and misery; making wretched; wretched; unhappy. SYN. Miserable; deplorable; distressful; afflictive; grievous; baleful; disastrous.
Extremely harmful; bringing physical or financial ruin; SYN. ruinous.