Matrilect

However, as a satellect moves closer to its matrilect, it would seem as though the reverse process should take place: the rules should become more restrictive, less simple. The speakers would at first over-generalize; they would have rules which would permit utterances which were outside the limits of acceptability in the matrilect. Such rules would have to be restricted as the satellect approached its matrilect.

Source: wiktionary

If one parent remains culturally dominant, however, the creole becomes a satellite ('satellect' or 'acolutholect') to that dominant language, which may be termed the 'matrilect'. In time, the creole normally begins recreolizing with the matrilect by borrowing from it. The different degrees in which the matrilect has been mixed into the creole consititute a 'gradatum' of overlapping systems in which the farthest from the matrilect at any moment is termed the 'basilect' by William Stewart.

Source: wiktionary

The highest level of good English has been called the acrolect; the lowest level of poor speech, the basilect; both are contrasted with the matrilect, the general native language.

Source: wiktionary

In the process, as substantial numbers of black speakers underwent decreolization, their decreolized speech, although technically a mimolect, would have much of the surface form and therefore social status of a true matrilect, and would itself then serve as an additional model for those speakers further behind in the decreolization process.

Source: wiktionary