slick

adjective

• 1(of an action or thing) done or operating in an impressively smooth, efficient, and apparently effortless way:a slick piece of software
• smooth and superficially impressive but insincere or shallow:the brands are backed by slick advertising he’s a slick con man

• 2(of skin or hair) smooth and glossy:a dandy-looking dude with a slick black ponytail
• (of a surface) smooth, wet, and slippery:she tumbled back against the slick, damp wall

noun

• 1an oil slick.
• a small smear or patch of a glossy or wet substance, especially a cosmetic:a slick of lip balm

• 2 (usually slicks) a race car or bicycle tire without a tread, for use in dry weather conditions.

• 3North American informal a glossy magazine.

verb

• 1 [with object] make (one’s hair) flat, smooth, and glossy by applying water, oil, or cream to it:his damp hair was slicked back [as adjectivein combination]: (slicked)his slicked-down hair
• cover with a film of liquid; make wet or slippery:she woke to find her body slicked with sweat [as adjectivein combination]: (-slicked)a rain-slicked road

• 2 (slick someone/something up) North American make someone or something smart, tidy, or stylish.