Sebastos

Sebastos (Greek: σεβαστός, "venerable one") was an honorific used by the ancient Greeks to render the Roman imperial title of Augustus. From the late 11th century on, during the Komnenian period, it and variants derived from it formed the basis of a new system of court titles for the Byzantine Empire. The female form of the title was sebastē (Greek: σεβαστή). It also formed the basis for the creation of the title of sebastokratōr.