R. G. Latham, The English Language
“ Of the Gypsy language I need only say, that it is not only Indo-Germanic, but that it is Hindoo. Few words from it have mixed themselves with our standard (or even our provincial) dialects.Thieves' language, or that dialect for which there is no name, but one from its own vocabulary, viz. Slang, is of greater value in philology than in commerce. It serves to show that in speech nothing is arbitrary. Its compound phrases are either periphrastic or metaphorical; its simple monosyllables are generally those of the current language in an older form. ”
