<Tr> <Td> (School) master, mistress </Td> <Td> Teacher </Td> </Tr> <P> U and non-U English usage, with "U" standing for "upper class", and "non-U" representing the aspiring middle classes, was part of the terminology of popular discourse of social dialects (sociolects) in Britain in the 1950s . The debate did not concern itself with the speech of the working classes, who in many instances used the same words as the upper classes . For this reason, the different vocabularies can often appear quite counter-intuitive: the middle classes prefer "fancy" or fashionable words, even neologisms and often euphemisms, in attempts to make themselves sound more refined ("posher than posh"), while the upper classes in many cases stick to the same plain and traditional words that the working classes also use, as, confident in the security of their social position, they have no need to seek to display refinement . </P> <P> The debate was set in motion in 1954 by the British linguist Alan S.C. Ross, professor of linguistics in the University of Birmingham . He coined the terms "U" and "non-U" in an article, on the differences that social class makes in English language usage, published in a Finnish professional linguistics journal . Though his article included differences in pronunciation and writing styles, it was his remark about differences of vocabulary that received the most attention . </P> <P> The English author Nancy Mitford was alerted and immediately took up the usage in an essay, "The English Aristocracy", which Stephen Spender published in his magazine Encounter in 1954 . Mitford provided a glossary of terms used by the upper classes (some appear in the table at right), unleashing an anxious national debate about English class - consciousness and snobbery, which involved a good deal of soul - searching that itself provided fuel for the fires . The essay was reprinted, with contributions by Evelyn Waugh, John Betjeman, and others, as well as a "condensed and simplified version" of Ross' original article, as Noblesse Oblige: an Enquiry into the Identifiable Characteristics of the English Aristocracy in 1956 . Betjeman's poem How to Get on in Society concluded the collection . </P>

Who described words and phrases as u or non-u