adverb (r)

• in a grave and sober manner

  dalam kubur dan tenang dengan cara

  Synonym:
  soberly, staidly
  

  source: wordnet30
• to a severe or serious degree

  pada tingkat parah atau serius

  Example:
  Is gravely ill.
  

  Synonym:
  badly, seriously, severely
  

  source: wordnet30
• In a grave manner.

  di sebuah kuburan cara.

  source: webster1913