The word "nigga" is an informal variation of the racial slur "nigger." It is often used within African American communities as a term of endearment or camaraderie among friends. However, it can be highly controversial and is typically considered inappropriate for use by individuals outside of this community due to its historical context and association with racism and oppression.
The term "nigga" originates from the African American Vernacular English (AAVE) adaptation of the derogatory term "nigger," which has its roots in the 19th-century usage of a racial slur for Black individuals. Over time, some members of the Black community reclaimed the term in a more affectionate and non-derogatory context.