Ratu is an Austronesian title used by male Fijians of chiefly rank. An equivalent title, adi, is used by females of chiefly rank. In the Malay language, the title ratu is also the traditional honorific title to refer to the ruling king or queen in Javanese culture. Thus in Java, a royal palace is called "keraton", constructed from the circumfix ke- -an and Ratu, to describe the residence of the ratu.