This paper is concerned with the cultural reality characterised by the cmmunication within bi- or multilingual groups, in comparison to monolingual comniunication. In other words, such groups use their varieties of language differently. In this respect the paper deals with a culture of multilingualisrn, with a primary aim of highlighting subtly the characteristics end structure of the bi- or multilingual way of speaking. In particular, the predominant goal of this study is to emphasize respects of the "mixed" speech behaviour (the bilingual inode of discourse); and of innovations in speech and communication of transcultural bi- or multilingualism utilizing the example of the German as a minority language in Hungary. On the basis of the research it has become clear that linguistic variations and differentes should not be viewed automatically as individual mistakes but as a reaction to a new conununicative challenge. The conclusions for the discipline of "applird lingusitics" encompass that: all outcornes of communicative dynamic processes on the system of language concerning monolingual as well as bilingual language behaviour (inclusive of both "natural" and "artificial" bi- or multilingualism), should be considered more subtly both in theory and practice. In addition these outcomes must be analysed and heuristically described within an integrated frame.