Example Sentences:

Ramayana:  Although all of his leading warriors were dead, Ravana couldn’t bring himself to admit that his abduction of Sita had been a calamitous blunder.

Mahabharata:  Although Abhimanyu’s death had made the thirteenth day of the Kurukshetra war calamitous for the Pandavas, Drona knew that an enraged Arjuna accompanied by Krishna could make the next day calamitous for the Kauravas.

Bhagavad-gita:  Seers of truth stay calm even amid calamitous situations because their vision is focused on an unchanging reality.