In general usage, the Byzantine imperial title evolved from simply "emperor" (basileus) to "emperor of the Romans" (basileus tōn Rōmaiōn) in the 9th century, to "emperor and autocrat of the Romans" (basileus kai autokratōr tōn Rōmaiōn) in the 10th.[4] In fact, none of these (and other) additional epithets and titles had ever been completely discarded.