Nigga is a variation of the racial slur nigger the term itself has a variety of connotations from friendly to insulting.
Nigga is generally used in description of an African-american. Although the term originated from a derogatory word for black people it has in some cases changed meanings
Offensive or Not Edit
A large debate over the word nigga has been ragging for some time as to it's connotation. Some argue it is a term of endearment amongst the black community and site it is often used as a friendly or neutral term amongst black gangs as well as in Gangster Rap. Others argue that like the word Nigger it is an offensive term used to slander the black community.