silk·y 
(sĭlkē)
(sĭlkē)adj. silk·i·er, silk·i·est
1. Made of silk; silken.
2. Resembling silk; smooth or lustrous.
3. Covered with or characterized by fine soft hairs or feathers: a silky chick.
4. Pleasantly agreeable, as to the ear: a silky voice.
5. Suave or ingratiating: "the silky courtier's manipulation of an enfeebled king" (David Foster Wallace).
silki·ly adv.
silki·ness n.