Hadrian bestowed honorific titles on many regional centres. The Japanese language makes use of honorific suffixes when referring to others in a conversation. The addition of the honorific prefix turns these verbs into a politer version. The term is last attested in 14th century Byzantium as a purely honorific title. Regiments were often rewarded for meritorious service by the grant of an honorific title. Later evolution has made the Hispanic distinction between "villas" and "ciudades" a purely honorific one. He acquired the honorific title Mahatma. The difference between honorific and humble speech is particularly pronounced in the Japanese language. The first of the Roman emperors was Octavian, better known by the honorific Augustus. The term is recognised as an honorific. Another title often used was "imperator", originally a military honorific. The system was name using letters from his honorific and name. This was a less polite honorific than "san". This offer was declined, but he was granted honorific Ming titles for his gesture. The honorific is commonly used in formal letters.