1. In a grave and sober manner
   - soberly, staidly 
2. To a severe or serious degree
   "is gravely ill"
   - badly, severely, seriously, critically

See also: grave

• resound
• resounding
• resoundingly
• resource
• resourceful
• resourcefully
• resourcefulness
• resourceless
• resow
• respect
• respectability
• respectable
• respectably
• respected
• respecter
• respectful
• respectfully
• respectfulness
• respecting
• respective
• respectively
• respects
• respell
• Respighi
• respirable