1. With brightness
   "the stars shone brilliantly"
   - brightly, bright 
2. In an extremely intelligent way
   "he solved the problem brilliantly"

See also: brilliant

• off spin
• off the beaten track
• off the cuff
• off the hook
• off the record
• off year
• off your guard
• off-and-on
• off-axis reflector
• off-base
• off-Broadway
• off-center
• off-centered
• off-centre
• off-centred
• off-color
• off-colour
• off-day
• off-guard
• Robert's Rules of Order
• Roberto Francesco Romolo Bellarmine
• Roberts
• Robertson
• Robeson
• Robespierre