Having an even and regular surface or consistency; free from perceptible projections, lumps, or indentations
(of a person's face or skin) Not wrinkled, pitted, or hairy
(of a liquid) With an even consistency; without lumps
(of the sea or another body of water) Without heavy waves; calm
SMOOTH, having a surface that is free from irregularities [adj] / one that smooths (to make smooth) [n SMOOTHERS]
(of movement) Without jerks
(of an action, event, or process) Without problems or difficulties
(of food or drink) Without harshness or bitterness
Denoting the face of a tennis or squash racket without the projecting loops from the stringing process (used as a call when the racket is spun to decide the right to serve first or to choose ends); the opposite of rough
(of a person or their manner, actions, or words) Suavely charming in a way considered to be unctuous