| A rash action, or a hasty decision, at this time could have calamitous results. |
| If he hadn't made such a fuss about acceptable standards of behaviour, his fall from grace might not have been so swift and calamitous. |
| The Reds had been guilty of a few calamitous defensive errors of their own, especially away from home, this season. |
| And there was the calamitous underestimation of the fighting power and resolution of the soldiers. |
| You might jitter with anxiety yourself as he steadfastly refuses to shift angles during a maddening and calamitous traffic jam. |
| A sluggish economy, a stock market free fall, and a government that can't balance its books is a potentially calamitous combination. |
