slick
adjective
MARKETING uk/slɪk/ ussomething that is slick is clever or attractive to look at, but may not have much real meaning or any important ideas:
a slick magazine/brochure
slick advertising/marketing/presentation The Liberal Party's slick marketing has not convinced voters.
someone who is slick has an attractive manner and is good at persuading people, but may not be sincere or moral:
He's slick and funny, but human underneath.
a slick salesman/politician
slickness
noun [ U ]
They have been criticized for the slickness of their advertising campaign.