From Anthony Lane's review of "One Day," in the August 29, 2011, issue of The New Yorker:
They have just graduated from the University of Edinburgh; he is the high-born smoothy, dripping with confidence, and she is the scholarly mouse, as indicated by her large round spectacles.
The word applies just a sprinkle, a dusting, of disdain to the man described. Had Mr Lane/his editors rendered the character a smoothie, it's likely too many readers would associate him with the fruit shake, which, of course, would be the wrong connotation.
Below, all wrong.
[photo: Cassie of the blog Veda House, a February posting.]