Word Origin & History
1781, "a shoemaker, a shoemaker's apprentice," of unknown origin. It came to be used in Cambridge University slang c.1796 for "townsman, local merchant," and by 1831 it was being used for "person of the ordinary or lower classes." Meaning "person who vulgarly apes his social superiors" arose 1843, popularized
1848 by William Thackeray's "Book of Snobs." The meaning later broadened to include those who insist on their gentility, in addition to those who merely aspire to it, and by 1911 had its main modern sense of "one who despises those considered inferior in rank, attainment, or taste."