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

• painkiller
• painkilling
• painless
• painlessly
• pains
• painstaking
• painstakingly
• painstakingness
• paint
• paint a picture
• paint leaf
• paint roller
• paint the lily
• paint the town red
• paintable
• paintball
• paintball gun
• paintbox
• paintbrush
• painted
• painted beauty
• painted cup
• painted daisy
• Painted Desert
• painted greenling