sleek 
(slēk)
(slēk)adj. sleek·er, sleek·est
1.
a. Smooth and lustrous as if polished; glossy: long, sleek hair.
b. In good health and having smooth or glossy hair, fur, or skin: a sleek hound.
2.
a. Able to or designed to move efficiently through air or water; streamlined: a sleek, luxurious sedan.
b. Thin and elegant in design: "A pair of sleek minarets anchored the skyline" (Terence Ward).
3. Polished or smooth in manner, especially in an unctuous way; slick: a sleek government official.
tr.v. sleeked, sleek·ing, sleeks
To make sleek; slick: sleeked his hair with pomade.
[Variant of SLICK.]
sleekly adv.
sleekness n.