Patois
Patois (, pl. same or ) is any language that is considered nonstandard, although the term is not formally defined in linguistics. It can refer to pidgins, creoles, dialects, and other forms of native or local speech, but not commonly to jargon or slang, which are vocabulary-based forms of cant. Class distinctions are embedded in the term, drawn between those who speak patois and those who speak the standard or dominant language used in literature and public speaking, i.e., the "acrolect".
Etymology
The term patois comes from Old French, patois "local or regional dialect" (earlier "rough, clumsy, or uncultivated speech"), possibly from the verb patoier, "to treat roughly", from pate "paw", from Old Low Franconian *patta "paw, sole of the foot" + -ois, a pejorative suffix. The language sense may have arisen from the notion of a clumsy or rough manner of speaking.
Examples
In France and other Francophone countries, patois has been used to describe non-standard French and regional languages such as Picard, Occitan, and Franco-Provençal, since 1643, and Catalan after 1700, when the king Louis XIV banned its use. The word assumes the view of such languages being backward, countrified, and unlettered, thus is considered by speakers of those languages as offensive when used by outsiders. Jean Jaurès said "one names patois the language of a defeated nation". However, speakers may use the term in a non-derogatory sense to refer familiarly to their own language (see also languages of France).