Language, which is an ideal identity marker, undergoes transformations during adolescence and particularly with bilinguals among whom the changeability in code preferences makes it possible to indicate defensive distancing. The change of language is used as a sign of disengagement from parents, from the family's culture of origin and their way of communicating. While being imputed to the group, these changes which appear in the language can be a visible and notable sign of intrapsychic mechanisms of distancing, of acculturation and affiliation.