Astoundingly
The Century Dictionary and Cyclopedia
In an astounding or amazing manner; amazingly.
Wiktionary, Creative Commons Attribution/Share-Alike License
adverb.
In an
astounding
manner; so as to
astound
,
surprise
, or
amaze
.
Word Usage
"It also defines a range of illegal e-mail practices that are routinely ignored in astoundingly high volume by spammers of the world."
Rhyme
Words with the same terminal sound
resoundingly