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

• Semtex
• sen
• senary
• senate
• senate campaign
• senate race
• senator
• senatorial
• senatorship
• send
• send a message
• send around
• send away
• send back
• send down
• send for
• send in
• send on
• send out
• send packing
• send word
• send-off
• sendee
• sender
• Sendero Luminoso