Book of Snobs is a collection of satirical works by William Makepeace Thackeray first published in the magazine Punch as The Snobs of England, By One of Themselves. Published in 1848, the book was serialised in 1846/47 around the same time as Vanity Fair.
While the word 'snob' had been in use since the end of the 18th century Thackeray's adoption of the term to refer to people who look down on others who are "socially inferior" quickly gained popularity.