African-American Vernacular English (AAVE) is the variety of English natively spoken, particularly in urban communities, by most working- and middle-class African Americans and some Black Canadians. Having its own unique grammatical, vocabulary, and accent features, AAVE is employed by middle-class Black Americans as the more informal and casual end of a sociolinguistic continuum. However, in formal speaking contexts, speakers tend to switch to more standard English grammar and vocabulary, usually while retaining elements of the vernacular (non-standard) accent. AAVE is widespread throughout the United States, but is not the native dialect of all African Americans, nor are all of its speakers African American.