[syn: badly, severely, gravely, seriously]
The Collaborative International Dictionary of English v.0.48:
Gravely \Grave"ly\, adv.
   In a grave manner.
   [1913 Webster]
WordNet (r) 3.0 (2006):
gravely
    adv 1: in a grave and sober manner; "he walked soberly toward
           the altar" [syn: gravely, soberly, staidly]
    2: 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" [syn: badly,
       severely, gravely, seriously]
Moby Thesaurus II by Grady Ward, 1.0:
36 Moby Thesaurus words for "gravely":
   bleakly, decorously, demurely, dismally, drearily, earnestly,
   formally, funereally, gloomily, grandly, grimly, heavily,
   imposingly, intensely, loftily, magisterially, majestically, nobly,
   regally, royally, sadly, sedately, seriously, severely,
   sober-mindedly, soberly, sobersidedly, solemnly, somberly,
   sombrously, staidly, stately, thoughtfully, venerably,
   with dignity, worthily