villainously

adv

1. In a villainous manner; in the manner of a villain; evilly.
2. Dreadfully; awfully.

   “I am now at liberty to confess, that much which I have heard objected to my late friend’s writings was well-founded. Crude they are, I grant you—a sort of unlicked, incondite things—villainously pranked in an affected array of antique modes and phrases.”

   ““You're singing villainously out of tune, Kurrell,” said the Major, truthfully. “Pass me that banjo.””