1. [adv]  with no problems or difficulties; "put the plans into effect quickly and smoothly"
2. [adv]  in a smooth and diplomatic manner; "`And now,' he said smoothly, `we will continue the conversation'"
3. [adv]  with great ease and success; "in spite of some mishaps, everything went swimmingly"

SMOOTHLY is a 8 letter word that starts with S.