if something is slick, it is done in a skilful and attractive way and seems expensive, but it often contains no important or interesting ideas:
a slick Hollywood production
The presentation was very slick.
if someone is slick, they are good at persuading people, often in a way that does not seem honest:
a slick used-car salesman
done smoothly and quickly:
He got round the defender using some slick footwork.
smooth and slippery
Cars were sliding off roads that were slick with rain.
5 American English old-fashioned
very good or attractive
—slickness noun [uncountable]