ul·​tra·​slick | \ ˌəl-trə-ˈslik How to pronounce ultraslick (audio) \

Definition of ultraslick

: extremely slick: such as
a : extremely good, attractive, or appealing often in an artificial or superficial way ultraslick marketing an ultraslick new phone the band's ultraslick hit single He … spent the next two days poking around the file system that sits underneath the ultraslick user experience.— Alexis C. Madrigal
b : extremely clever or skillful an ultraslick dance move
c : extremely clever in usually a dishonest or deceptive way an ultraslick salesman
d : extremely slippery an ultraslick patch of ice

First Known Use of ultraslick

1937, in the meaning defined above

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The first known use of ultraslick was in 1937

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showing courage and determination

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