1. With no problems or difficulties
   "put the plans into effect quickly and smoothly"
   - swimmingly 
2. In a smooth and diplomatic manner
   "'And now,' he said smoothly, 'we will continue the conversation'"

See also: smooth

• donee
• Donegal
• doner kebab
• Donets Basin
• Donetsk
• Donetske
• dong
• donga
• dongle
• Donizetti
• donjon
• donkey
• donkey boiler
• donkey cart
• donkey engine
• donkey jacket
• donkey pump
• donkey's years
• donkeywork
• Donkin
• donna
• Donne
• Donnean
• Donner Pass
• Donnian