ಉದಾಹರಣೆ : The stock market crashed on Black Friday.
A calamitous defeat.
The battle was a disastrous end to a disastrous campaign.
Such doctrines, if true, would be absolutely fatal to my theory.
It is fatal to enter any war without the will to win it.
A fateful error.

ಸಮಾನಾರ್ಥಕ : black, calamitous, fatal, fateful