severely in WordNet English dictionary

1. to a severe or serious degree
   "fingers so badly frozen they had to be amputated"; "badly injured"; "a severely impaired heart"; "is gravely ill"; "was seriously ill"
   badly  severely  gravely  seriously  badly  severely  gravely  seriously 
   
2. causing great damage or hardship
   "industries hit hard by the depression"; "she was severely affected by the bank's failure"
   hard  severely  hard  severely 
   
3. with sternness; in a severe manner
   "`No,' she said sternly"; "peered severely over her glasses"
   sternly  severely  sternly  severely 
   

severely in English Wiktionary