|Noah Webster's Dictionary|
(adv.) In a desperate manner; without regard to danger or safety; recklessly; extremely; as, the troops fought desperately.
Desperately (2 Occurrences)
Jeremiah 17:9 The heart is deceitful above all things, and desperately wicked: who can know it? (KJV WBS NAS RSV)
Jonah 1:13 Nevertheless the men rowed hard to get them back to the land; but they could not, for the sea grew more and more stormy against them. (See NAS)