SLEEKEST
Adjective
sleekest
superlative form of sleek: most sleek
Source: Wiktionary
SLEEK
Sleek, a. [Compar. Sleeker; superl. Sleekest.] Etym: [OE. slik; akin
to Icel. slikr, and OE. sliken to glide, slide, G. schleichen, OHG.
slihhan, D. slik, slijk, mud, slime, and E. slink. Cf. Slick, Slink.]
1. Having an even, smooth surface; smooth; hence, glossy; as, sleek
hair. Chaucer.
So sleek her skin, so faultless was her make. Dryden.
2. Not rough or harsh.
Those rugged names to our like mouths grow sleek. Milton.
Sleek, adv.
Definition: With ease and dexterity. [Low]
Sleek, n.
Definition: That which makes smooth; varnish. [R.]
Sleek, v. t. [imp. & p. p. Sleeked;p. pr. & vb. n. Sleeking.]
Definition: To make even and smooth; to render smooth, soft, and glossy; to
smooth over.
Sleeking her soft alluring locks. Milton.
Gentle, my lord, sleek o'er your rugged looks. Shak.
Source: Webster’s Unabridged Dictionary 1913 Edition