grievously

Etymology

From Middle English grevously; equivalent to grievous + -ly.

adv

1. In a grievous manner, severely.
   That's why this failure of the super committee represents a reckless, irresponsible gamble by our "leaders" in Washington. It's difficult to remember a Congress that has put the nation so much at risk in the service of ideology and to hold onto office. Partisans on both sides are grievously failing the country. November 21, 2011, David Gergen, “Have they gone nuts in Washington?”, in CNN.com