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

• resinlike
• resinoid
• resinous
• resiny
• resist
• resistance
• resistance pyrometer
• resistance thermometer
• resistance unit
• resistant
• resister
• resistible
• resisting arrest
• resistive
• resistivity
• resistless
• resistor
• resit
• resize
• resmudge
• resole
• resoluble
• resolute
• resolutely
• resoluteness