confoundedly

adverb3

1. •
   In a confounded manner; as if confused or thwarted.
2. •
   (informal, old-fashioned) Used as a mild oath: damnably.

   • I have been thinking, George, of changing our travelling dresses in the morning. I am grown confoundedly ashamed of mine. — 1773
3. •
   (informal, old-fashioned) Very; terribly.

   • That's most confoundedly good of you. — 1927