Noun
The oldest and most extensive written language of Southeast Asia (chiefly, in terms of written records, and the most extensive in the number and variety of its texts).
The oldest attested form of Javanese language spoken up to the thirteenth century.
Source: en.wiktionary.orgOften, words like these (or certain suffixes such as "-a" and "-i" or "-wan" and "wati") are absorbed from other languages (in these cases, from Sanskrit through the Old Javanese language ). Source: Internet