In a severe manner, in any sense of the word severe.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
ad. causing great damage or hardship
ad. with sternness; in a severe manner
ad. to a severe or serious degree
Word Usage
"ROME - A U.N. food agency on Friday released grim footage of what it described as severely malnourished North Korean children in the country hit by recent flooding."