classes of english

 ACROLECTAL 

An acrolect is a register of a spoken language that is considered formal and high style.

 

MESOLECTAL 

A mesolect is term referring to a register or range of registers of spoken language whose character falls somewhere between the prestige of the acrolect and the informality of the basilect.

 BASILECTAL 

In linguistics, a basilect is a dialect of speech that has diverged considerably from an acrolect or standard educated variety of language. A basilect and acrolect in which it originated may eventually reach mutual unintelligibility.