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

• Nucifraga caryocatactes
• Nucifraga columbiana
• nuclear
• nuclear cataract
• nuclear chemist
• nuclear chemistry
• nuclear club
• nuclear deterrence
• nuclear energy
• nuclear engineering
• nuclear explosion
• nuclear family
• nuclear fission
• nuclear fuel
• nuclear fusion
• nuclear fusion reaction
• nuclear magnetic resonance
• nuclear medicine
• nuclear meltdown
• nuclear physicist
• nuclear physics
• nuclear power
• nuclear propulsion
• nuclear reaction
• electrical fuse